8th Science Ch. 1

Question 1

the basic particle of an element

Answer 1

atom

Question 2

a mixture in which you can see the different parts

Answer 2

heterogeneous

Question 3

anything that has mass and takes up space

Answer 3

matter

Question 4

a particle formed when two or more atoms combine

Answer 4

molecule

Question 5

a single kind of matter that is pure

Answer 5

substance

Question 6

a kind of homogeneous mixture

Answer 6

solution

Question 7

the study of the properties of matter

Answer 7

chemistry

Question 8

any mixture in which different parts can’t be seen

Answer 8

homogeneous

Question 9

tells the elements and ratio of atoms in a compound

Answer 9

chemical formula

Question 10

the force of attraction between two atoms

Answer 10

chemical bond

Question 11

a characteristic of a substance that can be observed without changing it into another substance

Answer 11

physical property

Question 12

a characteristic of a substance that describes it’s ability to
change into different substances

Answer 12

chemical property

Question 13

a substance that cannot be broken down into any other substances by chemical or physical

Answer 13

element

Question 14

a substance made of two or more elements that are chemically combined into a set ratio

Answer 14

compound

Question 15

made of two or more substances that are together in the same place, but their atoms are chemically bonded

Answer 15

mixture

Question 16

The amount of matter in an object which does not change with location even if the force of gravity changes

Answer 16

Mass

Question 17

To measure the properties of matter scientists use a system SI units

Answer 17

International System of Units

Question 18

The SI unit of MAss

Answer 18

kg

Question 19

The amount of space that matter occupied

Answer 19

volume

Question 20

SI unit of volume

Answer 20

cubic feet (m3)

Question 21

volume formula

Answer 21

length x width x height

Question 22

a measure of the mass of a material in a given volume

Answer 22

density

Question 23

Density formula

Answer 23

Density = mass/volume

Question 24

The energy of matter in motion

Answer 24

Kinetic energy

Question 25

The energy an object has because of its position

Answer 25

Potential energy

Question 26

a form of potential energy that is stored in chemical bonds between atoms

Answer 26

chemical energy

Question 27

a form of energy that travels through space as waves

Answer 27

electromagnetic energy

Question 28

the energy of electrically charged particles moving from one place to another

Answer 28

electrical energy

Question 29

a metal strip that conducts electricity

Answer 29

electrode

Question 30

a change in a substance that doesn't change it's idenity

Answer 30

physical change

Question 31

a change in which one or more substances combine or break apart to form new substances

Answer 31

chemical change

Question 32

the principle that the total amount of matter is neither created nor destroyed during any chemical or physical change

Answer 32

law of conservation of MASS

Question 33

the ability to do work or cause change

Answer 33

energy

Question 34

a measure of the average energy of motion of the particles of a substance

Answer 34

temperature

Question 35

The total energy of all the particles of an object

Answer 35

thermal energy

Question 36

a change in which energy is taken in

Answer 36

endothermic change

Question 37

a change in which energy is given off

Answer 37

exothermic change