Grade 6 Science Test 10 Chap 6

Front 1

anything that takes up space and has weight

Back 1

matter

Front 2

amount of matter that makes up an object

Back 2

mass

Front 3

measure of the pull of gravity

Back 3

weight

Front 4

amount of matter in one unit of volume

Back 4

density

Front 5

tiny particles of which all matter is composed

Back 5

atoms

Front 6

tiny, extremely dense core at the center of an atom

Back 6

nucleus

Front 7

tiny particles that swarm at tremendous speeds around the core of an atom

Back 7

electrons

Front 8

metric unit used to measure an objects mass

Back 8

gram

Front 9

two particle that make up a nucleus

Back 9

protons and neutrons

Front 10

most metals are

Back 10

solid

Front 11

densest of the common metals

Back 11

lead

Front 12

semimetal that is used to make computer chips

Back 12

silicon

Front 13

only metal that is liquid at room temperature

Back 13

mercury

Front 14

element that is the basic building block of all the compounds

Back 14

carbon

Front 15

very hard metal which is an important ingredient in stainless steel

Back 15

nickel

Front 16

halogen that is added to toothpaste and drinking water

Back 16

fluorine

Front 17

halogen that is useful as a bleach and kills germs

Back 17

chlorine

Front 18

halogen that is added to table salt

Back 18

iodine

Front 19

colorless, odorless gas which makes up 78% of earth's atmosphere

Back 19

nitrogen

Front 20

highly reactive elements that tend to form compounds with alkali and alkaline earth metals

Back 20

halogens

Front 21

the simplest kind of atom with one proton and one electron

Back 21

hydrogen

Front 22

formed by electrons that are in orbit the same distance from the nucleus

Back 22

shell

Front 23

number of protons an atom has

Back 23

atomic number

Front 24

formed by electrons zooming around the nucleus

Back 24

electron cloud

Front 25

lacking an electrical charge

Back 25

neutral

Front 26

most abundant element at the surface of the earth

Back 26

oxygen

Front 27

study of what srbstances are make of and how one can be changed into another

Back 27

chemistry

Front 28

organized arrangement of all known elements

Back 28

periodic table of the elements

Front 29

elements which do not combine with anything else except under unusual circumstances

Back 29

noble gases

Front 30

two or more atoms firmly bound together

Back 30

molecule

Front 31

instead of melting when heated, iodine does this

Back 31

sublimes

Front 32

proton has what kind of charge

Back 32

positive

Front 33

an atom with equal protons and neutrons

Back 33

neutral

Front 34

two electrons will do this to each other

Back 34

repel

Front 35

a substance that is composed of only one type of atom

Back 35

element

Front 36

one or more types of atoms bonded togerther

Back 36

compound

Front 37

Two objects that have the same volume but different densities, which weighs more?

Back 37

the more dense object

Front 38

weight of an object changes from

Back 38

place to place

Front 39

the three main groups of elements

Back 39

metals, nonmetals, and semimetals

Front 40

A compound made of charged atoms is a ___.

Back 40

ionic compound

Front 41

hardest of all known materials

Back 41

diamond

Front 42

compound made of molecules

Back 42

molecular compound

Front 43

process in which atoms of elements or compounds are rearranged to form new substances

Back 43

chemical reaction

Front 44

rapid reaction of any substance with oxygen

Back 44

combustion