test on 10/01

Question 1

Chemistry

Answer 1

The study of composition, structure and properties of matter, the changed matter undergoes and and the energy accompanying these changes

Question 2

Matter

Answer 2

Anything that has mass and occupies space

Question 3

Energy

Answer 3

The ability to do work

Question 4

Physical Properties/changed

Answer 4

Characteristics of a substance that can be determined w/o changing the identity

Question 5

Chemical Properties/changed

Answer 5

Characteristics that describe the manner to conditions in which substance changed to a new substance

Question 6

Extensive Properties

Answer 6

Properties that depend on how much of a sample you have

ex. mass, volume, length, width, height

Question 7

Intensive properties

Answer 7

properties that don’t depend on amount

ex. density

Question 8

Pure substance

Answer 8

Any variety of matter in which all samples have identical properties

Question 9

Elements

Answer 9

Pure substances that cannot be broken down (SMALLEST!)

Question 10

Compounds

Answer 10

Two our more elements chemically combined, PROPORTIONS COUNT!!!!

Question 11

Mixtures

Answer 11

Combinations of two or more pure substances that keep own properties, physically combines, no ratio, no bonds

Question 12

Homogeneous mixtures

Answer 12

Has a uniform look, solution

ex. air, salt water

Question 13

Heterogeneous mixtures

Answer 13

See differences in mixture

Question 14

Filtration

Answer 14

Usually used to separate a solid and a liquid, uses a filter, based on particle size

Question 15

Evaporation

Answer 15

Liquid > vapor, seperation of materials through ability to evaporate

Question 16

Chromatography

Answer 16

Based on solubility of pigments in liquids, used with chromatography paper

Question 17

Distillation

Answer 17

Separation based on differences in boiling point

Question 18

Fractional distillation

Answer 18

Used to separate crude oil into its components

Question 19

Solid (properties)

Answer 19

Has a definite shape, volume, little distance between particles, has a strong attraction and also is constantly vibrating

Question 20

Liquid (properties)

Answer 20

Takes shape of container, has a definite volume, free to move, and has an intermediate distance between particles

Question 21

gas (properties)

Answer 21

Takes shape of container, takes volume of container, particles free to move, has large distance between particles and a weak attraction

Question 22

Density equation

Answer 22

m/v=d

Question 23

Significant figures

Answer 23

1-9 all sig figs

Question 24

Rules with numbers greater than one

Answer 24

with a decimal point: all numbers significant

without a decimal point, all terminal 0’s no significant

Question 25

Rules with numbers less than one

Answer 25

You move right until you hit a number besides 0, that number and on is significant

Question 26

Unlimited values

Answer 26

Unlimited 0 and defined quantities

Question 27

Addition and subtraction of sig figs

Answer 27

Round answer to the least accurate measurement, and cut of the answer at common place holder

Question 28

Multiplication and division of sig figs

Answer 28

Same amount of sig figs, must share!!

Question 29

Scientific notation formula

Answer 29

A x 10^n

Question 30

Addition and subtraction of sci notation

Answer 30

Make the exponents the same, add, and follow sig fig rules.

Question 31

Multiplication of sci notation

Answer 31

Add exponents and multiply

Question 32

Division of sci notation

Answer 32

Subtract exponents and divide

Question 33

How to convert

Answer 33

multiply your number by a fraction

Question 34

Please feel free to add more cards

Answer 34

:)