Thermal Energy & Chemical Equation Review

Front

What type of reaction is characterized by more energy in the reactants and less energy in the products?

Back

Exothermic reaction

Front

In an exothermic reaction, what happens to heat energy?

Back

Heat energy is released.

Front

In an endothermic reaction, what happens to heat energy?

Back

Heat energy is absorbed.

Front

How many total atoms are in the molecular formula C6H12O6?

Back

24 atoms

Front

What are the reactants in the chemical equation: NaHCO3 + CaCl2 → Ca(HCO3)2 + NaCl?

Back

NaHCO3 + CaCl2

Front

Define an exothermic reaction.

Back

A reaction that releases heat energy to the surroundings.

Front

Define an endothermic reaction.

Back

A reaction that absorbs heat energy from the surroundings.

Front

What is the significance of the energy diagram in chemical reactions?

Back

It shows the energy changes during the reaction, indicating whether it is exothermic or endothermic.

Front

What is a chemical equation?

Back

A symbolic representation of a chemical reaction, showing the reactants and products.

Front

What is the law of conservation of mass in chemical reactions?

Back

Mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.