Unit 7- Chemistry

Question 1

Compound

Answer 1

a pure substance in which the atoms of 2 or more elements are chemically combined

Question 2

Mixture

Answer 2

a substance that is made up of pure substances

Question 3

Homogenous mixture

Answer 3

mixture that contains two or more substances blended evenly throughout

Question 4

Heterogenous mixture

Answer 4

mixture in which different materials are unevenly distributed and easily identified

Question 5

Solution

Answer 5

homogenous mixture made by one substance dissolving in another

Question 6

Suspension

Answer 6

a heterogeneous mixture that separates into layers

Question 7

Colloid

Answer 7

a heterogenous mixture with particles that never settle

Question 8

Matter

Answer 8

anything that has mass and takes up space

Question 9

Aaron

Answer 9

the smallest part of an element that still maintains the properties of the element

Question 10

Proton

Answer 10

positively charged particle located in the nucleus

Question 11

nucleus

Answer 11

center of an atom

Question 12

neutron

Answer 12

neutral particle located in the nucleus

Question 13

electron

Answer 13

negatively charged particle outside of the nucleus

Question 14

electron cloud

Answer 14

Area around the nucleus where electrons are found

Question 15

Atomic number

Answer 15

number of protons in an atom

Question 16

pure substance

Answer 16

matter that always has the exact same composition

Question 17

element

Answer 17

a pure substance in which all atoms are alike

Question 18

Magnesium

Answer 18

Mg

Question 19

Gold

Answer 19

Au

Question 20

Hydrogen

Answer 20

H

Question 21

Carbon

Answer 21

C

Question 22

Oxygen

Answer 22

O

Question 23

Sulfur

Answer 23

S

Question 24

Silicon

Answer 24

Si

Question 25

Copper

Answer 25

Cu

Question 26

Sodium

Answer 26

Na

Question 27

Nickel

Answer 27

No

Question 28

Aluminum

Answer 28

Al

Question 29

Zinc

Answer 29

XB

Question 30

Uranium

Answer 30

U

Question 31

Iodine

Answer 31

I

Question 32

Phosphorus

Answer 32

P

Question 33

Chlorine

Answer 33

Cl

Question 34

Calcium

Answer 34

Ca

Question 35

Iron

Answer 35

Ge

Question 36

Helium

Answer 36

He

Question 37

Tin

Answer 37

Sn

Question 38

Silver

Answer 38

Ag

Question 39

Mercury

Answer 39

Hg

Question 40

Potassium

Answer 40

K

Question 41

Nitrogen

Answer 41

N

Question 42

Lead

Answer 42

Pb

Question 43

Bromine

Answer 43

Be

Question 44

Fluorine

Answer 44

F

Question 45

Manganese

Answer 45

Mn

Question 46

Chemical formula

Answer 46

representation of how elements combine to make a new substance