4.2 - Classifying Chemical Changes and Predicting Products.

Question 1

What chemical reaction combines two or more chemical species to form a single compound?

Answer 1

Synthesis (Combination) Reaction.

Question 2

In synthesis reactions, a metal and a non-metal form

Answer 2

a binary salt.

Question 3

In synthesis reactions, two non-metals form

Answer 3

a covalent compound.

Question 4

In synthesis reactions, a metal oxide and water from

Answer 4

a base

Question 5

In synthesis reactions, a non-metal oxide and water

Answer 5

form an acid.

Question 6

In synthesis reactions, a metal oxide and non-metal oxide form

Answer 6

A ternary salt.

Question 7

When chemical bonds form between two atoms, potential energy does what?

Answer 7

Goes down

Question 8

Forming chemical bonds ____ energy.

Answer 8

Releases.

Question 9

What do you call a process that releases energy to the surroundings (light, heat, etc)

Answer 9

Exothermic

Question 10

What is the minimum energy required to start a chemical reaction?

Answer 10

Activation energy.

Question 11

To give off energy, an exothermic reaction must first:

Answer 11

input activation energy.