Chemical Reactions

Front

True or False: In a chemical reaction, no new atoms are created, and no atoms are destroyed.

Back

True

Front

Why is a chemical change different from a physical change?

Back

A new substance is formed and in a physical change no new substance is formed

Front

The left side of a chemical equation is called?

Back

Reactants

Front

The right side of the equation is called the

Back

products

Front

Which statement is not a description of a chemical reaction? Options: A solid is dropped into a beaker of liquid and a gas is released., Two liquids are mixed in a beaker and a solid forms at the bottom of the beaker., A solid is dropped into a beaker of liquid and an explosion occurs., A liquid is heated in the sun and half of it evaporates.

Back

A liquid is heated in the sun and half of it evaporates.

Front

A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.

Back

Coefficient

Front

A chemical reaction that absorbs heat

Back

Endothermic

Front

What happens to the atoms of the reactants in a chemical reaction?

Back

The atoms of the reactants unbond, rearrange, and then rebond to form the products.

Front

Balance the equation: __K + __Br₂ --> __KBr

Back

2, 1, 2

Front

Reactants: C₃H₈ + 5O₂. What are the products in a balanced equation?

Back

3CO₂ + 4H₂O