Intro To Chem

Front 1

steps of the scientific method

Back 1

1. state the problem. P
2. gather information I
3. form a hypothesis. H
4. test the hypothesis T
5. analyze the data. A
6. draw conclusions. C

Front 2

independent variable

Back 2

factor that, as it changes, affects the measure of another variable

Front 3

dependent variable

Back 3

The thing that is being measured in an experiment.

Front 4

constant

Back 4

in an experiment a variable that does not change when other variables change

Front 5

control group

Back 5

standard used for comparison of test results in an experiment

Front 6

experimental group

Back 6

the group being tested

Front 7

one way to improve an experiment

Back 7

test the experiment multiple times

Front 8

how do you convert kelvin to celsius

Back 8

K --> -273C

Front 9

how do you convert celsius to kelvin

Back 9

C --> +273K

Front 10

compound

Back 10

a substance consisting of two or more different elements

Front 11

mixture

Back 11

a substance made by mixing other substances together

Front 12

density

Back 12

D=m/v

Front 13

what does GUESS stand for

Back 13

G-given

U-unknown

E-equation

S-substitution

S-solution

Front 14

description, is it separated by physical or chemical means, and example of element

Back 14

substance with atoms that are all alike, physical, the graphite in my pencil point

Front 15

description, is it separated by physical or chemical means, and example of compound

Back 15

is a substance in which atoms of two or more elements are combined in a fixed proportion, chemical, chalk

Front 16

description, is it separated by physical or chemical means, and example of heterogenous mixture

Back 16

a mixture in which different materials can be disguised easily, physical, pizza cheese

Front 17

description, is it separated by physical or chemical means, and example of homogenous mixture

Back 17

contains two or more gaseous liquid or solid substances blended evenly out, physical, soft drinks

Front 18

physical change

Back 18

any change in size, shape, or state of matter in which the identity of the substance remains the same

Front 19

chemical change

Back 19

change of one substance to a new substance

Front 20

volume, shape, particle movement, and example of solid

Back 20

definite, together, slow, rock

Front 21

volume, shape, particle movement, and example of liquid

Back 21

definite, splitting, medium, water

Front 22

volume, shape, particle movement, and example of gas

Back 22

no volume, apart, fast, boiling water

Front 23

volume, shape, particle movement, and example of plasma

Back 23

no definite, together, slow, sun

Front 24

3 key components of the kinetic theory

Back 24

1. all matter is composed of small particles

2. these particles are in constant, random motion

3. particles collide causing pressure

Front 25

dilute solution

Back 25

is one that has a small amount of solute in the solvent

Front 26

concentrated solution

Back 26

a solution that contains a lot of solute

Front 27

formula for concentration

Back 27

C= grams of solute

----------------------

mL of solvent

(C=M/V)

Front 28

know the graph (number 19)

Back 28

in study guide

Front 29

do questions 35, 36, 37

Back 29

in study guide

Front 30

how to know protons

Back 30

atomic number

Front 31

how to know electrons

Back 31

if the atom is neutral it is the same number as the protons

Front 32

how to know neutrons

Back 32

mass / the number of protons

Front 33

neutral atoms

Back 33

no charge-same number of protons and electrons

Front 34

isotopes

Back 34

different number of protons and neutrons *mass

Front 35

ions

Back 35

different number of protons and electrons *charge

Front 36

what does the octet rule state

Back 36

all atoms want 8 electrons

Front 37

ionic bond

Back 37

attraction formed between oppositely charged ions in an ionic compound

Front 38

covalent bond

Back 38

attraction formed between atoms when they share electrons

Front 39

metallic bond

Back 39

occurs because electrons move freely among a metal's positively charged ions

Front 40

relate the octet rule to bonding

Back 40

(don't know answer)

Front 41

Ionic Bond

Back 41

Attraction formed between oppositely charged ions

Front 42

Covalent Bond

Back 42

Attraction formed between atoms when they share electrons.

Front 43

Metallic Bond

Back 43

Occurs because electrons move freely among positively charged ion.

Front 44

Relate the octet rule to bonding

Back 44

( don't know )

Front 45

Neutral Atoms

Back 45

No charge - Same # protons + electrons

Front 46

Isotopes

Back 46

Different # of protons + neutrons

Front 47

Ions

Back 47

Different # of Protons + electrons

Front 48

What type of bond is formed between metals and nonmetals?

Back 48

ionic

Front 49

What type of bond is formed between 2 nonmetals?

Back 49

covalent

Front 50

What type of bond is formed between 2 metals?

Back 50

metallic