Unit 5 Test: Chemical Reactions

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat, resulting in an increase in temperature of the surroundings.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction in which two or more substances combine to form a single new compound.

Front

How can you determine if a chemical equation is balanced?

Back

You can determine if a chemical equation is balanced by counting the number of atoms of each element on both sides of the equation and ensuring they are equal.

Front

What is the general form of a synthesis reaction?

Back

The general form of a synthesis reaction is A + B → AB, where A and B are reactants that combine to form product AB.

Front

What evidence indicates a chemical reaction has occurred?

Back

Evidence of a chemical reaction can include color change, temperature change, gas production, or the formation of a precipitate.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is conserved.

Front

What is the difference between an endothermic and exothermic reaction?

Back

An endothermic reaction absorbs heat from the surroundings, while an exothermic reaction releases heat.

Front

What is a precipitate in a chemical reaction?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.