EXAM I

Question 1

Matter

Answer 1

Anything that has mass and takes up space

Question 2

Substance

Answer 2

A single chemical
One kind of matter

Question 3

Mixture

Answer 3

A sample of matter that contains two or more chemicals

Question 4

Solution

Answer 4

A homogenous mixture

Question 5

Homogenous

Answer 5

A sample which has a uniform appearance and composition throughout

Question 6

Heterogenous

Answer 6

Different phases
Usually visible

Question 7

Element

Answer 7

A pure substance which can be separated into other stable pure substances

Question 8

Compound

Answer 8

A pure substance which can be decomposed by a chemical change or into 2 or more other pure substances

Question 9

Atom

Answer 9

The smallest unit particle of an element

Question 10

Physical property

Answer 10

Can be described by senses
A measurable property

Question 11

Chemical property

Answer 11

Properties defined by the type of chemical changes possible

Question 12

Physical change

Answer 12

New form of old substance
No new substances formed

Question 13

Law of Multiple Proportions

Answer 13

When 2 elements combine, it is always in a simple ratio of whole numbers

Question 14

Law of Conservation of Mass

Answer 14

In a chemical change, mass is conserved. It is neither created or destroyed

Question 15

Law of Conservation of Energy

Answer 15

In a chemical change, energy is conserved. It is neither created or destroyed

Question 16

Chemical Change

Answer 16

Old substances destroyed
New substances formed

Question 17

H

Answer 17

Hydrogen

Question 18

He

Answer 18

Helium

Question 19

Li

Answer 19

Lithium

Question 20

Be

Answer 20

Beryllium

Question 21

B

Answer 21

Boron

Question 22

C

Answer 22

Carbon

Question 23

N

Answer 23

Nitrogen

Question 24

O

Answer 24

Oxygen

Question 25

F

Answer 25

Fluorine

Question 26

Ne

Answer 26

Neon

Question 27

Na

Answer 27

Sodium

Question 28

Mg

Answer 28

Magnesium

Question 29

Al

Answer 29

Aluminium

Question 30

Si

Answer 30

Silicon

Question 31

P

Answer 31

Phosphorus

Question 32

S

Answer 32

Sulfur

Question 33

Cl

Answer 33

Chlorine

Question 34

Ar

Answer 34

Argon

Question 35

K

Answer 35

Potassium

Question 36

Ca

Answer 36

Calcium

Question 37

Cr

Answer 37

Chromium

Question 38

Mn

Answer 38

Manganese

Question 39

Fe

Answer 39

Iron

Question 40

Co

Answer 40

Cobalt

Question 41

Ni

Answer 41

Nickel

Question 42

Cu

Answer 42

Copper

Question 43

Zn

Answer 43

Zinc

Question 44

Br

Answer 44

Bromine

Question 45

Kr

Answer 45

Krypton

Question 46

Ag

Answer 46

Silver

Question 47

Sn

Answer 47

Tin

Question 48

I

Answer 48

Iodine

Question 49

Ba

Answer 49

Barium

Question 50

Hg

Answer 50

Mercury

Question 51

Pb

Answer 51

Lead