Chemistry

Question 0

Particles in an atom with no charge

Answer 0

Neutrons

Question 1

Positive charges in an atom

Answer 1

Proton

Question 2

The center of an atom

Answer 2

Nucleus

Question 3

Two or more atoms joined together

Answer 3

Molecule

Question 4

Different kinds of atoms join together to get what?

Answer 4

A compound

Question 5

Formula for water

Answer 5

H 2 O

Question 6

Formula for Salt

Answer 6

NaCl

Question 7

Formula for carbon Dioxide

Answer 7

CO 2

Question 8

Chart that organizes the elements

Answer 8

Periodic Table

Question 9

How are elements grouped on the periodic table?

Answer 9

Elements with common properties are grouped together.

Question 10

What are two important categories of elements?

Answer 10

Metals and Non-Metals

Question 11

What portion of the elements are metals?

Answer 11

2/3

Question 12

Hydrogen

Answer 12

H

Question 13

Helium

Answer 13

He

Question 14

Carbon

Answer 14

C

Question 15

Nitrogen

Answer 15

N

Question 16

Oxygen

Answer 16

O

Question 17

Sodium

Answer 17

Na

Question 18

Aluminum

Answer 18

Al

Question 19

Iron

Answer 19

Fe

Question 20

What kind of change results in a new substance?

Answer 20

Chemical change

Question 21

What kind of change only changes the appearance and properties of a substance but does not make a new substance?

Answer 21

Physical change

Question 22

Example of a chemical change

Answer 22

Iron rusting

Wood burning

Question 23

Example of physical change

Answer 23

Breaking glass

Cutting wood or paper

Question 24

When two or more substances are combined but no chemical change happens

Answer 24

Mixture

Question 25

What you get when two or more substances are combined and a chemical change happens

Answer 25

A compound

Question 26

Table salt

Answer 26

NaCl

Question 27

Table salt is a compound of what two substances

Answer 27

Sodium and Chloride