Chemistry

Question 1

The part of the solution that dissoves the other substance (water in the saltwater solution)

Accepted Answer

solvent

Question 2

A well mixed mixture that cannot be separed easily is a _______________.

Accepted Answer

solution

Question 3

Charles' Law states that when the temperature decreases, the volume of the gas ___________.

Accepted Answer

decreases

Question 4

The center of an atom containing protons and neutrons is the

Accepted Answer

nucleus

Question 5

An acidic solution would be ranked between _____ and _____ on the pH scale.

Accepted Answer

6 and 0

Question 6

A/an ____________ is when the number of protons and neutrons are different.

Accepted Answer

isotope

Question 7

Which is a "Basic" solution?

Accepted Answer

ammonia

Question 8

A/an _______________ is composed of one type of atom and can not be broken down.

Accepted Answer

element

Question 9

Which is a compound?

Accepted Answer

H2O

Question 10

The part of the solution that dissolves in another substance is the (the salt in saltwater)

Accepted Answer

solute

Question 11

A small, positively charged particle in the center of the atom is the

Accepted Answer

proton

Question 12

Most of an atom's mass comes from the __________ and __________.

Accepted Answer

protons and neutrons

Question 13

The substances that enter into a chemical reaction (ex: H2 + O) are the

Accepted Answer

reactants

Question 14

Which of the following is not considered to be matter?

Accepted Answer

light

Question 15

"Neutral" on the pH scale is represented by which number?

Accepted Answer

7

Question 16

Two or more elements are called ___________.

Accepted Answer

compounds

Question 17

A phase change in which a substance goes from a liquid to a gas is called

Accepted Answer

evaporation

Question 18

A ____________ change is when matter may change form, but not its identity.

Accepted Answer

physical

Question 19

Zinc's atomic number is 30, so it has _____ protons and electrons.

Accepted Answer

30

Question 20

A ________ bond is when two atoms share electrons. It is a weaker bond between non-metals.

Accepted Answer

Covalent

Question 21

________ can be added to an acidic solution, like acid rain, to neutralize or stabilize it.

Accepted Answer

Buffers

Question 22

___________ are the farthest away or most loosely held electrons.

Accepted Answer

Valence Electrons

Question 23

Matter is not created or destroyed. This is the Theory of ________________.

Accepted Answer

Conservation of Matter

Question 24

A/an ________ is any substance that tastes sour and reacts with metals and carbonates.

Accepted Answer

Acid

Question 25

A/an ___________ has a bitter taste, feels slippery and ranks between 8-14 on the pH scale.

Accepted Answer

Base

Question 26

What is the mass per unit of volume?

Accepted Answer

density

Question 27

A __________ bond is when electrons are transferred between metals and non-metals.

Accepted Answer

Ionic

Question 28

Boyles Law is when the pressure increases, the volume of a gas ___________.

Accepted Answer

decreases

Question 29

A __________ change is when a new substance is produced.

Accepted Answer

chemical

Question 30

An electron has a ___________ charge.

Accepted Answer

negative

Chemistry

Questions 30

Chemistry

Questions 30