Mod. 2

Question 1

Matter?

Answer 1

anything that has mass and takes up space

Question 2

transparent?

Answer 2

see through

Question 3

opaque

Answer 3

not see through

Question 4

substance

Answer 4

each type of matter is a substance

Question 5

pure substance

Answer 5

can’t be separated into any other sub. and always has same composition

Question 6

mixture

Answer 6

2+ substances

Question 7

element

Answer 7

pure substance that can’t be broken down into any simpler substance and only has one atom

Question 8

compound

Answer 8

pure sub. that contains 2+ elements chemically joined together

Question 9

chem. formula

Answer 9

‘recipe’ to make a substance

Question 10

homogeneous mix.

Answer 10

looks the same throughout

Question 11

heterogeneous mix.

Answer 11

can see diff. subs. in it.

Question 12

solute

Answer 12

substance that dissolves

Question 13

solvent

Answer 13

substance dissolved into

Question 14

solution

Answer 14

mixture created with solvent and solute

Question 15

atom

Answer 15

smallest unit of matter

Question 16

solid

Answer 16

definite volume and shape

Question 17

liquid

Answer 17

definite volume, no definite shape

Question 18

gas

Answer 18

no definite volume or shape

Question 19

kinetic energy

Answer 19

energy of motion

Question 20

diffusion

Answer 20

particles spreading out from area of higher concentration to an area of lower concentration.

Question 21

density

Answer 21

amount of atoms packed into a space

Question 22

what are phys. props

Answer 22

characteristics of a substance that don’t change the substance’s composition.

Question 23

examples of phys. props

Answer 23

conductivity, malleability, hardness, odor/appearance, viscosity, density, melting and boiling points.

Question 24

what are chem. props

Answer 24

characteristics of a subs. that are measured or observed when a substance undergoes a change that makes an entirely diff. subs.

Question 25

ex. of chem. props

Answer 25

flammability, reactivity

Question 26

how to tell if change is chem:

Answer 26

color changes, precipitate forms, temp. changes, gas forms, light forms