Unit 2 Test

Question 0

Cu&Zn

Answer 0

Mixture

Question 1

NaHCO3

Answer 1

Compound

Question 2

Al

Answer 2

Element

Question 3

Thermochemistry-

Answer 3

Study of transfers of energy as heat occurring during chemical and physical changes

Question 4

Temperature (T)

Answer 4

Average kinetic energy of the particles in a sample; as it increases, so does the temp.

Question 5

Heat (q)

Answer 5

Energy transferred between samples because of their difference in temp.; measured in Joules (J) with calorimeters
(High heat->low heat)

Question 6

Specific heat

Answer 6

The amount of energy transferred during a temp.

Question 7

Ionic compounds

Answer 7

First element & second element +IDE

Or gang

Question 8

Covalent compounds

Answer 8

Prefix first element & prefix second element +IDE

Question 9

Triple point

Answer 9

The temperature & pressure conditions at which the solid, liquid, & gas of a substance coexist

Question 10

Critical pressure

Answer 10

The lowest temperature in which a substance can exist as a liquid

Question 11

Standard pressure:

Answer 11

1.0 ATM
760 mmHg
760 Torr
101.3 Kpa
30.00 in
30'C
273'K

Question 12

Organic compound

Answer 12

Study of compounds containing carbon except CO2

Question 13

Inorganic

Answer 13

Study of compounds that aren’t organic

Question 14

Physical chemistry

Answer 14

Study of changes of matter and their energy

Question 15

Analytical chemistry

Answer 15

Study of composition of materials

Question 16

Biochemistry

Answer 16

Study of substances & processes in living things

Question 17

Theoretical chemistry

Answer 17

Use of math and computers to understand chemical behaviors and design new compounds

Question 18

Matter

Answer 18

Anything that has mass and volume

Question 19

Atom

Answer 19

Smallest unit of an element that still holds the properties of that element

Question 20

Element

Answer 20

Pure substance made of only one type of atom

Question 21

Compound

Answer 21

Stubstance made of 2 or more different types of atoms that are chemically bonded

Question 22

Molecule

Answer 22

Type of compound in which bonds are covalent bonds made of 2 of the same elements

Question 23

Solid

Answer 23

Definite shape and volume
Atoms are packed together
Strong attractive forces between atoms
Only vibrate in place

Question 24

Liquids

Answer 24

``` Indefinite shape Definite volume Constant motion Intermolecular forces Close together Incompressible ```

Question 25

Gas

Answer 25

Indefinite shape and volume Moves very quickly Far apart/ weak attractive forces Compressible

Question 26

Sublimation

Answer 26

Solid to a gas

Question 27

Heterogenous matter

Answer 27

Matter that has parts with different properties

Question 28

Homogenous matter

Answer 28

Has similar properties throughout the substance

Question 29

Alloy

Answer 29

Substance made from two elements melted together

Question 30

Extensive

Answer 30

Change when size changes (e.g mass and volume)

Question 31

Intensive

Answer 31

Properties that do NOT change with size (eg density and ductility)

Question 32

Chemical change signals:

Answer 32

``` Color change Temperature change Gas produced Precipitate formed Irreversible Light given off ```