H.Chemistry Final Flashcards Preview

flashcards! > H.Chemistry Final > Flashcards

Flashcards in H.Chemistry Final Deck (87)
Loading flashcards...
0

SI unit of length and it's symbol.

Meter
m

1

SI unit of mass and it's symbol.

Kilograms
Kg

2

SI unit of time and it's symbol.

Seconds
s

3

SI unit of temperature and it's symbol.

Kelvin
K

4

SI unit of volume and it's symbol.

Cubic meter
m^3

5

SI unit of density and it's symbol.

Kilogram per cubic meter
Kg/m^3

6

Which of the six SI units are derived units?

Volume and density

7

Equation for converting Celsius to kelvin

K=t(c)+273.15

8

Equation for converting Kelvin to Celsius

C=t(k)-273.15

9

Tells how close the individual measurements are to each other.

Precision

10

Describes how close the measurement is to the accepted value

Accuracy

11

Proposed explanation for an observation

Hypothesis

12

Tested explanation for a broad set of observations.

Theory

13

Standard use for comparison

Control

14

Variable that is manipulated

Independent variable

15

Variable that is observed, responds to independent variable.

Dependent variable

16

Equation of the error and percent error

Error=experimental-accepted

Percent error= error/accepted x 100

17

Ability of a substance to undergo a specific chemical change. Examples.

Chemical property
-decomposition
-rust
-acid
-water
-combustion

18

Quality of a substance that can be observed without changing the substances composition.Example.

Physical property
-hardness
-color
-conductivity
-malleability

19

Change that produces matter with a different result than the original matter. Examples.

Chemical change
-color change
-light or energy involved

20

Properties of a material change, but the composition of the material doesn't.

Physical change
-dissolving
-changes in state

21

Depends of the type in a sample, NOT the amount of matter.

Intensive property
-density
-absorbency

22

Dependent upon the amount of matter in a sample.examples.

Extensive property
-mass
-volume
-length

23

The shape of a solid is...

Definite

24

Those a solid have attractive forces?

Yes

25

The shape of a liquid is....

Indefinite

26

The volume of a solid is...

definite

27

The volume of a liquid is...

Definite

28

Do liquids have attractive forces?

Yes

29

The shape of a gas is...

Indefinite