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Flashcards in 00 Deck (47):
1

What is a qualitative observation?

Those not involving numbers

2

A universally accepted explanation of the problem

Theory

3

States what general behavior is observed to occur naturally

Law

4

State of matter with a definite shape and volume, particles are packed tightly together and only vibrate gently around fixed positions

Solids

5

State of matter with no definite shape (takes shape of container) but a definite volume. Particles are free to move

Liquid

6

Have neither a definite shape nor a definite volume. Particles spread apart and fill all of the space in the container available to them

Gases

7

Solid to liquid

Melting

8

Liquid to gas

Boiling or evaporation

9

Gas to liquid

Condensing

10

Solid to gas

Sublimation

11

Gas to solid

Reverse sublimation or deposition

12

Liquid to solid

Freezing, solidifying, or crystallizing

13

When a substance is heated it ________ energy

Gains

14

Change where the atoms of a substance are rearranged to form new substances

Chemical change

15

Formation of a solid during a chemical change that was not there before

Precipitate

16

A substance that cannot be broken down into other substances by chemical means

Element

17

Formed when elements bond together, always have a fixed composition

Compounds

18

Has varying compositions, is made up of a number of pure substances

Mixture

19

What are pure substances?

Elements or compounds

20

Mixture uniform in composition

Homogenous

21

Mixture that has separate distinct regions

Heterogenous

22

What is the equation to convert Celsius to Kelvin?

T in K= T in C + 273

23

What is the equation to turn Kelvin to Celsius?

T in C= T in K -273

24

The ratio of the mass of an object to its volume

Density

25

Density=

Mass/ volume

26

Mass=

Density x volume

27

What is the equation for percentage error?

Absolute value of
(actual value)-(calculated value)/(actual value) X 100

28

What is the base unit for mass?

Kilogram

29

What is the base unit for length?

Meter

30

What is the base unit for time?

Second

31

What is the base unit for amount of substance?

Mole

32

What is the base unit for temperature?

Kelvin

33

What is the symbol for kilogram?

Kg

34

What is the symbol for meter?

m

35

What is the symbol for second?

s

36

What is the symbol for mole?

Mol

37

What is the symbol for kelvin?

K

38

Giga

10^9

39

Mega

10^6

40

Kilo

10^3

41

Deci

10^-1

42

Centi

10^-2

43

Milli

10^-3

44

Micro

10^-6

45

Nano

10^-9

46

Pico

10^-12

47

What is a quantitative observation?

Those involving numbers or measurement