12 Questions
What is the product of the chemical reaction between nitrogen gas and hydrogen gas?
NH3
What type of biomolecule would cause a person to gain more weight?
Fat
What is the total number of H atoms in the reactant side of the equation N2(g) + 3H2(g) → 2NH3(g)?
6
What happens to the gas molecules when a gas confined in a closed container is heated?
They move faster
What is the primary factor that determines an atom's ability to undergo chemical reactions?
Outermost electrons
Why do tires blow out during long summer drives?
Because the volume of the gases increases as the temperature increases
What is the result of increasing the temperature in a chemical reaction?
The reaction rate increases
What is the purpose of adding coefficients in a chemical equation?
To balance the equation
Why do reactions eventually stop?
One or more of the reactants has been used up
Why can you still pump air into a balloon even though it is already inflated?
Because air molecules can be compressed
What is the condition for the greatest reaction to occur between marble and hydrochloric acid?
1 g of powdered marble in 100 ml of hydrochloric acid at 30 °C
What is the result of a double displacement reaction involving NaNO3 and KOH?
NaOH and KNO3
Test your knowledge of chemical reactions, conservation of mass, and properties of gases in this Science 10 reviewer. Covers topics such as reactants, products, and coefficients in chemical equations.
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