Chapter 2 Study Guide

Question 1

What is an ionic bond?

Accepted Answer

a type of chemical bond

Question 2

pure water has a pH of?

Accepted Answer

pH of 7

Question 3

Has a neutral charge.

Accepted Answer

Neutrons

Question 4

The ___ has a positive charge.

Accepted Answer

Protons

Question 5

what is activation energy?

Accepted Answer

the minimum quanity of energy

Question 6

Pure substance that consist of one type of atom.

Accepted Answer

water

Question 7

Combination of two or more elements is called?

Accepted Answer

chemical reaction

Question 8

what is mass number?

Accepted Answer

total number of protons and neutrons in a nucleus.

Question 9

One of the subatomic particles that compose the atom is ... ?

Accepted Answer

Electrons, Protons, Neutrons

Question 10

what is cohesion?

Accepted Answer

Union or reaction in things.

Question 11

What is the atomic number?

Accepted Answer

number of positive charges or protons

Question 12

A pH higher that 7 is classified as ?

Accepted Answer

more alkaline

Question 13

A pH lower than 7 is classified as?

Accepted Answer

more acid

Question 14

The ___ has a negative charge.

Accepted Answer

Electrons

Question 15

What is the basic unit of matter?

Accepted Answer

Atom

Question 16

what is the single most abundant compound in living organisms?

Accepted Answer

water

Question 17

blod is an example of?

Accepted Answer

suspension

Question 18

what is mixture?

Accepted Answer

a mixture of substances made by mixing other together.

Question 19

What is the center of the atom?

Accepted Answer

Nucleus

Question 20

What is adhesive force?

Accepted Answer

attraction between molecules

Questions 20