Chem 100 Ch 1

Front 1

What is Chemistry?

Back 1

The study of the composition of substances and the changes they undergo

Front 2

5 Divisions of Chemistry

Back 2

ORGANIC-carbon containing compounds
INORGANIC-non carbon containing compounds
ANALYTICAL-what is it made of
PHYSICAL- How does it work?
BIOCHEMISTRY- chemistry of living things

Front 3

Explain steps of
Scientific Method

Back 3

GATHER INFORMATION (observe)
GENERATE IDEAS (hypothesis)
TESTING (experiment)
THEORY (well tested hypothesis)

Front 4

Hypothesis

Back 4

suggested solution to a problem or explanation for an event

Front 5

Theory

Back 5

well tested hypothesis (it works)
never proven (can be disproved)
ex.Theory of Evolution

Front 6

Law

Back 6

concise summary of experimental results
ex. Law of Gravity

Front 7

Matter

Back 7

anything which takes up space and has mass
"stuff objects are made of"

Front 8

Mass

Mass = Weight

Back 8

the amount of matter an object contains.
a number with the label GRAMS

Front 9

Non-Matter

Back 9

Energy, emotions, heat

Front 10

Four states of Matter

Back 10

SOLID, LIQUID, GAS, PLASMA

Front 11

Solid

Back 11

definite shape, definite volume, particles tightly packed in rows and seats!

Front 12

Liquid

Back 12

indefinite shape, and definite volume, particles like general admission seating tightly packed

Front 13

Gas

Back 13

indefinite shape, indefinite volume, particles far apart

Front 14

Plasma

Back 14

excited gas, same properties as gas but glowing

Front 15

Amorpus solids

Back 15

solids which lack a definite shape
ex..rubber tubing

Front 16

Physical Properties of matter

Back 16

things which can be determined by using your senses or a measuring tool
ex..color, clarity, state of matter, odor, temperature

Front 17

Pure subtance

Back 17

a substance with only one ingredient
ie..salt, water

Front 18

Mixture

Back 18

contains two or more substances in the same container at the same time
can be seperated physically with tweezers, filter paper or evaporation

Front 19

Homogenous

Back 19

looks the same throughout
ex..gatorade
Homo=same

Front 20

Heterogenous

Back 20

looks different in different places
ex. salsa
Hetero=different

Front 21

Element

Back 21

a single thing from the periodic table of elements

Front 22

Atom

Back 22

single piece of an element-the smallest particle of an element which retains the properties of that element

Front 23

Compound

Back 23

two or more elements hooked together in a special way which can only be seperated by a chemical reaction
ex..NaCl

Front 24

Molecule

Back 24

single piece of a compound

Front 25

Na

Back 25

Sodium