Chemical Reactions

Question 1

The process in which atoms are rearranged to produce new substances.

Answer 1

Chemical reaction

Question 2

Uses chemical symbols and numbers to represent a given substance

Answer 2

Chemical formula

Question 3

Is an expression that uses symbols to show the relationship between the starting substances and the substances that are produced by a chemical reaction

Answer 3

Chemical equation

Question 4

The substances that participate in a chemical reaction. Their chemical formula is written on the left

Answer 4

Reactants

Question 5

Substances formed in a reaction. There chemical formulas are written on the right

Answer 5

Products

Question 6

States that matter is neither created nor destroyed in an ordinary physical and chemical change.

Answer 6

Law of conservation of mass

Question 7

A chemical reaction that requires an input of energy

Answer 7

Endothermic reaction

Question 8

A chemical reaction in which energy is released to the surroundings

Answer 8

Exothermic reaction

Question 9

States that energy cannot be created or destroyed, but that it can change form.

Answer 9

Law of conservation of energy