Science Final Exam #6

Metallic chlorates, when heated, results in metallic chlorides and oxygen. This is a _____ reaction.

decomposition

Sulfur trioxide reacts with water to make sulfuric acid. This is a _____ reaction.

synthesis

If the arrangement of atoms in a substance changes, then what is true?

a chemical reaction has occurred

Endothermic reactions ______.

absorb more energy than they release

Breaking a chemical bond _____.

absorbs energy from the surroundings

Chemical reactions ______.

can either release more energy than they absorb or absorb more energy than they release, depending on the reaction

Sodium fluoride and silver nitrate become sodium nitrate and silver chloride. Carbonate and hydrogen ions become water and carbon dioxide. This is a _____ reaction.

double-replacement

Atoms rearrange when _____. chemical bonds break or particles collide with enough energy

neither

Each substance written to the right of the arrow in a chemical equation is a ____.

product

Forming a chemical bond _____.

releases energy into the surroundings