Matter and Chemical Change

Question 1

WHMIS

Answer 1

Workplace Hazardous Materials Information System, easy to see warning signs

Question 2

MSDS (SDS)

Answer 2

Material Safety Danger Sheet: detailed info sheet about potentially hazardous product

Question 3

States of matter

Answer 3

Solid, liquid, gas

Question 4

Condensation

Answer 4

change of state from gas to liduid

Question 5

Sublimation

Answer 5

solid to gas

Question 6

Deposition

Answer 6

gas to solid

Question 7

Properties

Answer 7

characteristic that describes a particular substance

Question 8

Physical Property

Answer 8

property that describes the physical appearance and composition of a substance

Question 9

Physical Change

Answer 9

Change in appearance or state of a substance that doesn’t change the composition (eg: ripping up paper)

Question 10

Malleable

Answer 10

Can be pounded or rolled into sheets

Question 11

Ductile

Answer 11

can be stretched into a long wire`

Question 12

solubility

Answer 12

substance that can dissolve

Question 13

Density

Answer 13

Amount of mass in a given volume of a substance

Question 14

Conductivity

Answer 14

ability to conduct electricity or heat

Question 15

Chemical Property

Answer 15

how something reacts with another substance

Question 16

Chemical Change

Answer 16

when a new substance has completely different properties than the old one

Question 17

Pure Substance

Answer 17

Substance made up of only one kind of matter

Question 18

Element

Answer 18

Pure substance that cannot be broken down

Question 19

Compound

Answer 19

Chemical combo of 2 or more elements with a specific ratio

Question 20

MIxture

Answer 20

Combo of pure substances

Question 21

Mechanical Mixture

Answer 21

Heterogenous mixture where substance contained are visible

Question 22

Solution

Answer 22

homogenous mixture

Question 23

Aqueous Solution

Answer 23

A solution in which water is the solvent

Question 24

Suspension

Answer 24

Cloudy mixture where tiny particles are held within a another, particles can be separated

Question 25

Colloid

Answer 25

Suspension but particles cannot be separated

Question 26

Electrons

Answer 26

Invisible, negatively charged particles

Question 27

Electron Shells

Answer 27

orbit of electrons around the nucleus of an atom

Question 28

Protons

Answer 28

Positively charged atom in the nucleus of a cell

Question 29

Nuetrons

Answer 29

Neutral particle in the nucleus of a cell

Question 30

Atomic Mass

Answer 30

Mass of one atom of an element calculated from the total number of protons, neutrons and electrons

Question 31

Period

Answer 31

Horizontal row on the periodic table

Question 32

Group or Family

Answer 32

Vertical row on the periodic table

Question 33

Atomic Number

Answer 33

Number of protons in the nucleus of one atom of an element

Question 34

Atomic Mass Unit

Answer 34

measure of atomic mass

Question 35

Mass Number

Answer 35

The sum of the number of protons and neutrons in an atom

Question 36

Metals

Answer 36

elements that are shiny, malleable, ductile, and/or conduct electricity

Question 37

Non-metals

Answer 37

Elements that are dull, brittle and do not conduct electricity

Question 38

Metalloids

Answer 38

element that has both metal and non-metal properties

Question 39

Alkali metals

Answer 39

group 1 elements in the periodic table (not including hydrogen), super reactive

Question 40

Alkaline-earth metals

Answer 40

Group 2 elements, not as reactive as group 1

Question 41

Halogens

Answer 41

Group 17 elements, most reactive non-metals

Question 42

Noble gases

Answer 42

Group 18 elements, most stable and unreactive metals

Question 43

Chemical Formula

Answer 43

Combo of symbols that represents a compound

Question 44

Ionic Compound

Answer 44

Pure substance formed when at least 1 metal and 1 non-metal combine

Question 45

Ions

Answer 45

Atom that has become electrically charged because of losing or gaining electrons

Question 46

Polyatomic Ions

Answer 46

Group of atoms acting as 1, with a charge

Question 47

Molecule

Answer 47

group of atoms joined by covalent bonds

Question 48

Molecular Compound

Answer 48

pure substance formed when non-metals combine

Question 49

Chemical Reaction

Answer 49

Reaction that takes place when 2 or more substances react to form new substances

Question 50

Reactants

Answer 50

substance that reacts with another substance in a chemical reaction to form a product

Question 51

Products

Answer 51

What you get from a chemical reation

Question 52

Exothermic Reaction

Answer 52

Production of heat or energy in a chemical reaction

Question 53

Endothermic Reaction

Answer 53

Absorption of heat ore energy in chemical reaction

Question 54

Combustion

Answer 54

Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and gives off energy

Question 55

Corrosion

Answer 55

Slow chemical reaction that occurs when oxygen in the air reacts with metal

Question 56

Cellular Respiration

Answer 56

Chemical reaction that takes place in cells

Question 57

Conservation of mass

Answer 57

Law that mass is not created or destroyed in chemical change

Question 58

Closed System

Answer 58

An experiment where no new chemicals enter or leave

Question 59

Open System

Answer 59

New chemicals can enter or leave as they please

Question 60

Catalysts

Answer 60

Substance that makes chemical reactions happen faster

Question 61

Enzyme

Answer 61

Catalysts involved in chemical reactions in living things.