Chapter 1. Skills And Processes Of Chemistry

Question 1

Quantative

Answer 1

Has numbers or quantities associated with it

Question 2

Qualitative

Answer 2

Describes the qualities or changes in quality of matter including a substances color odour or physical state.

Question 3

Sources of error

Answer 3

Anything that contributes to making an experiment differ from what was expected. We have no control over them

Question 4

Model

Answer 4

Something that explains a collection of observations

Question 5

Law

Answer 5

A general statement of a fact, and some observations to boot

Question 6

Scientific notation is decided into 2 parts

Answer 6

Mantissa and the ordinate

Question 7

When you multiply in scientific notation, you do what to the exponents

Answer 7

Add

Question 8

When you divide in scientific notation, you do what to the exponents

Answer 8

Subtract

Question 9

Si unit for length

Answer 9

Meter m

Question 10

Si unit for mass

Answer 10

Kilogram

Question 11

Si unit for Time

Answer 11

Second

Question 12

Si unit for electric current

Answer 12

ampere A

Question 13

Si unit for temperature

Answer 13

Kelvin

Question 14

Si unit for luminous Intensity

Answer 14

Candela

Question 15

Si unit for the amount of the substance

Answer 15

Mole

Question 16

Accuracy

Answer 16

The agreement of s particular value to its true value

Question 17

Precision

Answer 17

The agreement among several measurements of the same quality

Question 18

Precision 2

Answer 18

The exactness of the measurement

Question 19

Systematic error

Answer 19

When a system shows error in the same direction

Question 20

Random error

Answer 20

When a system shows error equally in high or low directions

Question 21

Range uncertainty

Answer 21

The acceptable range of values within which the true value of s measurement falls (shows a +/-)

Question 22

Absolute uncertainty

Answer 22

Exactly how much higher or lower a measured value is than the accepted one.

Question 23

Percentage error formula

Answer 23

Percentage error= (measured value-accepted value)/100

In percent form

Question 24

In multiplication, how you determine the sig figs

Answer 24

Only have as much as the one with the least

Question 25

In addition, how you determine the sig figs

Answer 25

The place value of the last sig fig in the least precise answer.
Example 123.8, 8is the last, so the answer will have 4 sig figs

Question 26

Kelvin to Celsius

Answer 26

T(k)- 273.15 =T(c)

Question 27

Celsius to kelvin

Answer 27

Add 273.15

Question 28

Fahrenheit to celcius

Answer 28

T(c)=(t(f)-32)X1/1.8

Question 29

Celcius to Fahrenheit

Answer 29

T(f)=1.8X(t(c)) +32

Question 30

Scientific method

Answer 30

1. Observation
2. Statement of a hypothesis
3. Experimentation
4. Statement of a theory

Question 31

You are trapped in a cold dark room. You have one match, a gas heater, a gas stove, and an oil lamp. You must light them all so you can survive. Which do you light first?

Answer 31

The match… For obvious reasons