Experiments |
Grade |
Green Star |
Blue bottle |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/5d7e5-5.2.1_33.jpg)
GSAI = 41.67% |
Candle combustion |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ef1f7-8_1_8_3d.jpg)
GSAI = 58.33% |
Carbon combustion |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/5e47f-8_3a.jpg)
GSAI = 41.67% |
Chemical reaction between barium chloride and sodium sulfate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/996b0-bacl2_na2so4.jpg)
GSAI = 58.33% |
Chemical reaction between bleach and lemon juice |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/7d35c-7_11.jpg)
GSAI = 41.67% |
Chemical reaction between calcium nitrate and sodium carbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/bc133-11_5a_11_9c.jpg)
GSAI = 58.33% |
Chemical reaction between calcium nitrate and zinc(II) chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/2f0a7-11_1_11_4a_11_4d_11_5c_11_6_11_9b_11_9c.jpg)
GSAI = 33.33% |
Chemical reaction between copper coins and vinegar |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/0f797-1_17a.jpg)
GSAI = 50.00% |
Chemical reaction between copper(II) sulfate and sodium hydroxide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/57528-reacao_pbno3_ki.jpg)
GSAI = 33.33% |
Chemical reaction between Epsom salts and ammoniacal detergent |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/5b85d-11_7.jpg)
GSAI = 50.00% |
Chemical reaction between hydrochloric acid and Alka Seltzer |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/42fcb-9_10.jpg)
GSAI = 66.67% |
Chemical reaction between hydrochloric acid and aluminium |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/05f41-exp_1_6.jpg)
GSAI = 41.67% |
Chemical reaction between hydrochloric acid and ammoniacal detergent |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/49a7b-7_5.jpg)
GSAI = 41.67% |
Chemical reaction between hydrochloric acid and calcium carbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/06cd4-9_5.jpg)
GSAI = 66.67% |
Chemical reaction between hydrochloric acid and eggshell |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/4fa9a-9_3.jpg)
GSAI = 75.00% |
Chemical reaction between hydrochloric acid and iron |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/89166-1_2_1_3_1_19b_1_21c_1_21d.jpg)
GSAI = 33.33% |
Chemical reaction between hydrochloric acid and magnesium |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/7d769-exp_1_1.jpg)
GSAI = 50.00% |
Chemical reaction between hydrochloric acid and sodium bicarbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/7254a-hcl_bicarbonato.jpg)
GSAI = 66.67% |
Chemical reaction between hydrochloric acid and sodium hydroxide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/05eca-7_8.jpg)
GSAI = 50.00% |
Chemical reaction between hydrochloric acid and sodium hydroxide (using phenolphthalein and universal indicator paper) |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ee255-7_4.jpg)
GSAI = 50.00% |
Chemical reaction between hydrochloric acid and sodium hydroxide (using phenolphthalein as indicator) |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/b2cfe-7_4.jpg)
GSAI = 50.00% |
Chemical reaction between hydrochloric acid and sodium hydroxide (using universal indicator paper as indicator) |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/35978-7_7.jpg)
GSAI = 58.33% |
Chemical reaction between hydrochloric acid and sodium hydroxide (using universal indicator solution as indicator) |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/7415b-7_4_7_4_7_8.jpg)
GSAI = 50.00% |
Chemical reaction between hydrochloric acid and sodium thiosulfate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/1deb6-9_6.jpg)
GSAI = 33.33% |
Chemical reaction between hydrochloric acid and zinc |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/a1e2c-1_2_1_3_1_19b_1_21c_1_21d.jpg)
GSAI = 33.33% |
Chemical reaction between iron and copper sulfate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/2e4ce-1_2_1_3_1_19b_1_21c_1_21d.jpg)
GSAI = 33.33% |
Chemical reaction between iron silver nitrate and a nail |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/6dfec-1_21b.jpg)
GSAI = 41.67% |
Chemical reaction between lead mitrate and potassium chromate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/9e2ff-exp_1_2.jpg)
GSAI = 33.33% |
Chemical reaction between lead nitrate and calcium chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/59f69-11_1_11_4a_11_4d_11_5c_11_6_11_9b_11_9c.jpg)
GSAI = 33.33% |
Chemical reaction between lead nitrate and potassium iodide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ab7a6-reacao_pbno3_ki.jpg)
GSAI = 33.33% |
Chemical reaction between lead nitrate and sodium chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c0cae-6_1_6_5a.jpg)
GSAI = 41.67% |
Chemical reaction between lead nitrate and sodium sulfate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/88c2b-11_1_11_4a_11_4d_11_5c_11_6_11_9b_11_9c.jpg)
GSAI = 33.33% |
Chemical reaction between magnesium sulfate and sodium carbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ee7e5-1_8.jpg)
GSAI = 75.00% |
Chemical reaction between nitric acid and copper |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/0d573-5.3.2-b_5.4.1_5.4.2_5.5.1_5.5.5_2.jpg)
GSAI = 33.33% |
Chemical reaction between nitric acid and potassium hydroxide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/e35e4-7_10.jpg)
GSAI = 25.00% |
Chemical reaction between potassium bromide and silver nitrate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c2413-5.5.2_5.5.4_6.jpg)
GSAI = 41.67% |
Chemical reaction between potassium permanganate and glycerol |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d5efb-9_11.jpg)
GSAI = 50.00% |
Chemical reaction between silver nitrate and copper. |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/b03d0-exp_1_3.jpg)
GSAI = 33.33% |
Chemical reaction between silver nitrate and nickel chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c4966-11_1_11_4a_11_4d_11_5c_11_6_11_9b_11_9c.jpg)
GSAI = 33.33% |
Chemical reaction between silver nitrate and potassium chromate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/bc063-11_1_11_4a_11_4d_11_5c_11_6_11_9b_11_9c.jpg)
GSAI = 33.33% |
Chemical reaction between silver nitrate and potassium iodide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c98ce-11_1_11_4a_11_4d_11_5c_11_6_11_9b_11_9c.jpg)
GSAI = 33.33% |
Chemical reaction between silver nitrate and sodium carbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/5e0c3-11_4b.jpg)
GSAI = 41.67% |
Chemical reaction between sodium and chlorine |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/8e2fd-1_10.jpg)
GSAI = 25.00% |
Chemical reaction between sodium carbonate and calcium chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/93237-8_2.jpg)
GSAI = 91.67% |
Chemical reaction between sodium carbonate and copper(II) sulfate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/a364a-11_5a_11_9c.jpg)
GSAI = 58.33% |
Chemical reaction between sodium chloride and silver nitrate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d3d5e-nitratoprata_cloretosodio.jpg)
GSAI = 41.67% |
Chemical reaction between sodium hydroxide and carbon dioxide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d79fc-7_2.jpg)
GSAI = 50.00% |
Chemical reaction between sulfuric acid and zinc |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ca113-1_6.jpg)
GSAI = 41.67% |
Chemical reaction between the hydrochloric acid and chalk |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/17e82-5.5.8_30.jpg)
GSAI = 66.67% |
Chemical reaction between vinegar and calcium carbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d444d-1_21a.jpg)
GSAI = 58.33% |
Chemical reaction between vinegar or lemon with sodium bicarbonate or ferment |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/b24ce-reacao_vinagre_fermento.jpg)
GSAI = 75.00% |
Chemical reaction between zinc(II) chloride and sodium carbonate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c13db-8_8.jpg)
GSAI = 58.33% |
Chemical reaction speed - comparing the reactions of hydrochloric acid with magnesium and zinc |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/99fb3-9_12.jpg)
GSAI = 33.33% |
Chocolate fusion |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/847d3-4.1_26.jpg)
GSAI = 91.67% |
Classification of water using acid-base indicators |
Secondary (10th, 11th or 12th grades) |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/a07dc-al11_2_1.jpg)
GSAI = 41.67% |
Cleaning a copper coin with Coca-Cola |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/93ad7-7_3.jpg)
GSAI = 33.33% |
Collapse a soda can |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/be008-4_4.jpg)
GSAI = 66.67% |
Cool and warm up air in balloons |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ba337-4.1.jpg)
GSAI = 91.67% |
Copper combustion |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/37315-1_4.jpg)
GSAI = 25.00% |
Crystallization of sugar (saccharose) |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/99d22-3.5.jpg)
GSAI = 100.00% |
Decomposition of ammonium chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/0c6d0-5.1.2_4.jpg)
GSAI = 16.67% |
Decomposition of baking soda or ferment |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/7e7c3-5.1.1_11.jpg)
GSAI = 25.00% |
Decomposition of hydrogen peroxide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c88b8-50.jpg)
GSAI = 75.00% |
Decomposition of mercury(II) oxide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/916f2-5.1.2_5.1.3_5.1.4_4.jpg)
GSAI = 16.67% |
Decomposition of potassium permanganate |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/65d14-5.1.2_5.1.3_5.1.4_4.jpg)
GSAI = 16.67% |
Decomposition of silver bromide |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/b686e-5.3.2-b_5.4.1_5.4.2_2.jpg)
GSAI = 33.33% |
Decomposition of silver chloride |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d1bb1-5.3.2-b_5.4.1_5.4.2_2.jpg)
GSAI = 33.33% |
Decomposition of water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/88e57-5.3.1-a_b_49.jpg)
GSAI = 66.67% |
Desalinate salt water |
Secondary (10th, 11th or 12th grades) |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c65bf-des_agua_2.jpg)
GSAI = 91.67% |
Determination of the boiling point of acetone |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d5b9d-6.3.jpg)
GSAI = 50.00% |
Determination of the boiling point of ethanol |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/20ceb-6.2_28.jpg)
GSAI = 58.33% |
Determination of the boiling point of water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/51f0a-6.1-a.jpg)
GSAI = 83.33% |
Determination of the density of acetone |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/29ab6-7.6.jpg)
GSAI = 58.33% |
Determination of the density of aluminum |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/336f6-7.1_7.3_7.4_30.jpg)
GSAI = 66.67% |
Determination of the density of cooking oil |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/949cb-7.7_7.8_7.10_7.11_15.jpg)
GSAI = 100.00% |
Determination of the density of copper |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/f0174-7.1_7.3_7.4_30.jpg)
GSAI = 66.67% |
Determination of the density of ethanol |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/27d61-7.9_29.jpg)
GSAI = 66.67% |
Determination of the density of glycerin |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d2225-7.7_7.8_7.10_15.jpg)
GSAI = 100.00% |
Determination of the density of iron |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/55adb-7.1_7.3_7.4_30.jpg)
GSAI = 66.67% |
Determination of the density of lead |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/16391-7.2_7.5_1.jpg)
GSAI = 50.00% |
Determination of the density of olive oil |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d660a-7.7_7.8_7.10_15.jpg)
GSAI = 100.00% |
Determination of the density of water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c5815-7.7_7.8_7.10_15.jpg)
GSAI = 100.00% |
Determination of the density of zinc |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/5e168-7.2_7.5_1.jpg)
GSAI = 50.00% |
Determination of the enthalpy of combustion of some alcohols (in construction) |
Secondary (12th grade) |
No GS
|
Determination of the fusion point of sulfur |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/94c65-6.5_11.jpg)
GSAI = 25.00% |
Determination of the melting point of naphthalene |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/d523d-6.6_17.jpg)
GSAI = 25.00% |
Determination of the melting point of the water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/90da6-6.4b_15.jpg)
GSAI = 100.00% |
Determination of the neutralization enthalpy of the reation NaOH (aq) + HCl (aq) (in construction) |
Secondary (12th grade) |
No GS
|
Dissolution of ammonium chloride in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/128fc-1.7.jpg)
GSAI = 50.00% |
Dissolution of calcium chloride in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/0b9a8-1_19a.jpg)
GSAI = 75.00% |
Dissolution of effervescent tablet |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/2b979-1_22.jpg)
GSAI = 66.67% |
Dissolution of food dye in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/a14c2-2.4_.jpg)
GSAI = 83.33% |
Dissolution of fruit juice in heated water and room temperature |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/ca22e-2.5b.jpg)
GSAI = 58.33% |
Dissolution of potassium permanganate in heated water and cooled water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/61b29-2_3.jpg)
GSAI = 25.00% |
Dissolution of potassium permanganate in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c1419-2_1.jpg)
GSAI = 33.33% |
Dissolution of salt in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/7f489-2.2_2.3_2.5_15.jpg)
GSAI = 100.00% |
Dissolution of sugar in vinegar |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/db11d-2.2_2.3_2.5_15.jpg)
GSAI = 100.00% |
Dissolution of sugar in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/c5834-dissolucao_acucar_agua.jpg)
GSAI = 100.00% |
Enter a boiled egg into a bottleneck |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/e9137-4_3.jpg)
GSAI = 66.67% |
Eosin disslution in water |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/51a7b-2_5b.jpg)
GSAI = 66.67% |
Ethanol combustion |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/1f2e0-1_13.jpg)
GSAI = 66.67% |
Ethanol dissolution in water and water dissolution in ethanol |
7th, 8th or 9th grades |
![](http://educa.fc.up.pt/catalogo/assets/uploads/ensino_protocolos/cce44-dissolucao_agua_etanol.jpg)
GSAI = 66.67% |