Unit B: Matter and Chemical Change

Question 1

Alkali Metals

Answer 1

Group 1 on periodic table and is most reactive metals

Question 2

Alkaline earth metals

Answer 2

Group 2 and is second most reactive metals

Question 3

amu (atomic mass unit)

Answer 3

a measure of its atomic mass

Question 4

Aqueous solution

Answer 4

solution where water is the solvent

Question 5

atom

Answer 5

smallest part of an element that is representative of the element

Question 6

atomic mass

Answer 6

mass of one atom of an element

Question 7

atomic number

Answer 7

number of protons in an nucleus of an atom of the element

Question 8

catalyst

Answer 8

substance that helps a chemical reaction react faster

Question 9

cellular respiration

Answer 9

chemical reaction that takes place in cells

food + oxygen -> energy + water + carbon dioxide

Question 10

chemical change

Answer 10

two or more substances react to form a new substance with new properties

Question 11

chemical properties

Answer 11

describes how two or more subtances interact with each other

Question 12

chemical reaction

Answer 12

a reaction of two or more substances react to form a new substance

Question 13

chemistry

Answer 13

study of behavior and properties of matter

Question 14

closed system

Answer 14

experiement is done where nothing else comes in or goes out.

Question 15

colloid

Answer 15

mixture where its not easy to seperate the substances

Question 16

combustion

Answer 16

chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy.

Question 17

compound

Answer 17

two or more elements are chemically combined

Question 18

conductivity

Answer 18

how well the element can conduct electricity or heat

Question 19

conservation of mass

Answer 19

total mass of reactants = total mass of products
no matter is destroyed or created

Question 20

corrosion

Answer 20

slow chemical change that occurs when
oxygen in the air reacts with a metal

Question 21

deposition

Answer 21

gas turning directly into a solid

Question 22

ductility

Answer 22

how a solid can be stretched into a wire

Question 23

electron shells

Answer 23

orbit of electrons around the nucleus of an atom

Question 24

electron

Answer 24

negavtively charged particals that orbit around the nucleus of an atom

Question 25

element

Answer 25

substance that cannot be broken down into a simplier substance

Question 26

endothermic

Answer 26

chemical reaction that absorbs the heat

Question 27

exothermic

Answer 27

chemical reaction that releases heat

Question 28

group/family

Answer 28

vertical groups on the periodic table that have similar characteristics

Question 29

halogen

Answer 29

in group 17, most reactive non-metal

Question 30

malleability

Answer 30

how a solid can be pounded or rolled into sheets

Question 31

matter

Answer 31

anything with mass and occupies space

Question 32

mechanical mixture

Answer 32

different substances that make up the substance is visible

Question 33

metal

Answer 33

shiny, malleable, ductile element that conducts electricity

Question 34

metalloids

Answer 34

elements with both nonmetal and metal properties

Question 35

mixture

Answer 35

combination of pure substances

Question 36

neutrons

Answer 36

neutrally charged particles in the nucleus

Question 37

noble gas

Answer 37

most stable and non reactive in group 18

Question 38

non-metal

Answer 38

dull, brittle element that is anor insulator poor conductor

Question 39

Open system

Answer 39

experiement is done where particles can escape

Question 40

period

Answer 40

horizontal rows on the periodic table (1-7)

Question 41

periodic table

Answer 41

a table that has the elements organized

Question 42

Physical change

Answer 42

The appearance or state of the matter changes but the composition stays the SAME

Question 43

Physical properties

Answer 43

describes the physical appearance and composition of a substance

Question 44

precipitate

Answer 44

when solid is formed in a liquid

Question 45

products

Answer 45

new substance produced in a chemical reaction between reactants

Question 46

properties

Answer 46

a specific characteristic of matter used to help identify different types

Question 47

protons

Answer 47

positively charged particles

Question 48

pure substances

Answer 48

made of only one kind of matter, has a unique set of properties

Question 49

reactants

Answer 49

two or more substances reactinn in a chemical reaction to produce a new substance with different properties

Question 50

solubility

Answer 50

a substance that can dissolve in agiven amount of solvent to form a saturated solution at a given temperature

Question 51

solution

Answer 51

substances that make up the substance aren't visible

Question 52

states of matter

Answer 52

solid, liquid, and gas

Question 53

sublimation

Answer 53

when a solid directly changes into a gas. Ex, dry ice

Question 54

suspension

Answer 54

substances that make up the solution can be seperate easily

Question 55

WHMIS

Answer 55

Workplace Hazardous Materials and Information System; images are used to indicate how hazardous products are

Question 56

nucleus

Answer 56

positively charged centre of an atom; contains protons and neutrons