Chemical Reactions

Front

What are the starting materials in a chemical reaction called?

Back

Reactants

Front

In the equation 4Al + 3O₂ → 2Al₂O₃, how many atoms of aluminum are on each side?

Back

4

Front

What effect does grinding a seltzer tablet into powder have on the rate of reaction?

Back

Increases surface area

Front

What are the substances listed on the right side of a chemical equation called?

Back

Products

Front

In the reaction @@6CO_2 + 6H_2O ightarrow C_6H_{12}O_6 + 6O_2@@, how many carbon atoms are balanced on each side?

Back

6

Front

What is a chemical reaction?

Back

A process where reactants transform into products through breaking and forming bonds.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release heat, while endothermic reactions absorb heat.

Front

What is an example of a physical change?

Back

Melting ice is a physical change, as it does not alter the chemical composition.