chapter 1.2: matter and its properties

Question 1

matter:

Answer 1

anything that has mass and takes up space

Question 2

mass:

Answer 2

the amount of matter

Question 3

atom:

Answer 3

the smallest unit of an element that retains the properties of that element

Question 4

element:

Answer 4

a pure substance made of only one kind of atom

Question 5

compound:

Answer 5

a substance made up of the atoms of two or more elements that are chemically bonded

Question 6

extensive properties:

Answer 6

depends on the amount of matter present (i.e: mass/volume)

Question 7

intensive properties:

Answer 7

does not depend on the amount of matter present (i.e: density/melting point/boiling point)

Question 8

physical:

Answer 8

can be observed without changing its composition (i.e: color/density/odor/melting point)

Question 9

chemical:

Answer 9

describes how a substance undergoes chemical reactions to form new substances (i.e: ability to rust/burn/decompose)

Question 10

states:

Answer 10

there are 3 under normal lab conditions

Question 11

solid:

Answer 11

definite shape and volume; usually high density; incompressible

Question 12

liquid:

Answer 12

definite volume; takes shape of container; flows; less dense than solids; mostly incompressible

Question 13

gas:

Answer 13

takes shape and volume of container; compressible; called a vapor if the substance is not a gas at room temperature

Question 14

pure substance:

Answer 14

has a uniform and definite composition (homogeneous and pure)

Question 15

element (classification):

Answer 15

cannot be changed into a simpler substance by ordinary lab means

Question 16

compound (classification):

Answer 16

can be separated into simpler substances by chemical reactions, not by physical means

Question 17

mixture:

Answer 17

a physical blend of 2 or more substances; can be separated by physical means

Question 18

homogenous solution:

Answer 18

uniform throughout (saltwater/kool-aid)

Question 19

heterogenous solution:

Answer 19

not uniform (fruit salad/dirt/water)