description of matter

Question 1

What is matter ?

Answer 1

anything with mass and occupies space

Question 2

How can matter be classiflied as ?

Answer 2

1. pure substance
2. mixture

Question 3

What are pure substances ?

Answer 3

a. all pure substances are homogenous
b. pure substances are either elements or compounds

Question 4

What are Elements?

Answer 4

1. can not be broken down
2. the name of an element represented by a chemical symbol

Question 5

what does elements consist of?

Answer 5

one identical atom

Question 6

What is a compound?

Answer 6

consist of two or more diffeent elements chemically combined ( bonded )

Question 7

Describe a compound

Answer 7

1. can be broken down
2. unite in definite proportions
3. different properties than elements

Question 8

What is a mixture?

Answer 8

formed when 2 or more substances physically combined

Question 9

What are the two types of mixtures?

Answer 9

1. homogenous mixture
2. heterogenous mixtues

element and compound - substance

Question 10

What is a homogenous mixture?

Answer 10

the composition is uniform ( same ) throughout the mixture

Question 11

what is another name for homogenous mixtures?

Answer 11

solutions

Question 12

what is a heterogenous mixture?

Answer 12

composition is not uniform (different) throughout the mixture

Question 13

How can mixtures be separated by?

Answer 13

physical means such as distilliation filtration

Question 14

what are the 3 ways mixtures are form?

Answer 14

1. mixture of 2 elements
2. mixture of element and compound
3. mixtue of 2 compounds

Question 15

How are the properties of matter classifed as?

Answer 15

1. physical property
2. chemical property

Question 16

what are physical properties?

Answer 16

propeties that can be determined without altering the chemical makeup of the material

ex. color, size, mass, volume, density, melting pts, freezing pts, solubility

Question 17

what are chemical properties?

Answer 17

can only be identified by trying to cause a chemical change in which a substance may have changed into a new substance

ex. chemical property of iron is that it will react with oxygen to form iron oxide( rust) however gold has a different chemical property it will react with oxygen

Question 18

Changes in matter are classifed by?

Answer 18

1. physical change
2. chemical change

use of energy

Question 19

what is an aqueous solution?

Answer 19

1. substance dissolves in water
2. homogenous solution
3. mixture is a physical combination of 2 or more substance

Question 20

Properties of solid

Answer 20

definite shape, definite volume, orderly geometric pattern, strong force of attraction

Question 21

what are the properties of liquid

Answer 21

1. indefinite shape
2. definite volume
3. less orderly arangement of particles
4. moderate force of attraction

Question 22

What is the gas properties?

Answer 22

1. indefinite shape
2. indefinite volume
3. randomly arranged
4. weak force of attraction

Question 23

Difference between a gas and vapor

Answer 23

a vapor is the gaseous state of a substance that is generally a liquid o solid at room temp