Unit 1 (chapter 1 and 2)

Question 1

Accuracy

Answer 1

getting the correct answer, the ability to match the accepted or actual value

Question 2

Conversion factor

Answer 2

when you set one set of units equal to another (1 ft=12 in)

Question 3

Data

Answer 3

facts and statistics collected together during an experiment

Question 4

Density

Answer 4

mass/volume

Question 5

dependent variable

Answer 5

variable that relies on another variable

Question 6

derived unit

Answer 6

unit that results from a mathematical combination of SI base units

Question 7

dimensional analysis (factor label method)

Answer 7

method that uses any number or expression multiplied without changing the value

Question 8

hypothesis

Answer 8

possible solution to problem or explanation for observation

Question 9

independent variable

Answer 9

variable that can stand alone

Question 10

mass

Answer 10

the quantity of matter in an object

Question 11

metric system

Answer 11

decimal measuring system based on meter, liter, gram

Question 12

natural or scientific law

Answer 12

a statement that expresses generally observed behavior

Question 13

precision

Answer 13

getting close to the same answer everytime

Question 14

significant figures/digits

Answer 14

certain digits and first uncertain number

Question 15

theory

Answer 15

a set of assumptions put forth to explain some aspect of the observed behavior of matter

Question 16

unit

Answer 16

part of measurement that tells us what scale or standard is being used to represent the results of the measurment

Question 17

volume

Answer 17

amount of 3-dimensional space being taken up by an object

Question 18

sig fig rules

Answer 18

all non-zero numbers are significant
sandwiched zeros (those that occur between two significant digits) are significant
zeros that are only placeholders for a decimal are not significant
zeros at the end of a number that also contain a decimal are significant
exact numbers (no uncertainty in the value) may be thought of as having an infinite number of significant digits. these include numbers that were counted or are defined values (conversion fractions)

Question 19

multiplying and dividing sig fig rules

Answer 19

round your answer to the smallest number of sig figs

Question 20

adding and subtracting sig fig rules

Answer 20

round your answer to the smallest number of decimal places (or the significant digit farthest to the left). can only keep 1 uncertain digit

Question 21

Mega

Answer 21

M
1*10^6 or 1,000,000

Question 22

Kilo

Answer 22

k
1,000

Question 23

Base

Answer 23

m, g, s, L, etc
1

Question 24

Deci

Answer 24

d
1/10 or .1

Question 25

Centi

Answer 25

c
1/100 or .01

Question 26

Milli

Answer 26

m
1/1,000 or .001

Question 27

Micro

Answer 27

µ
1/1,000,000 or .000001

Question 28

length

Answer 28

metric base unit: meter (m)
SI unit: m

Question 29

mass

Answer 29

metric base unit: gram (g)
SI unit: kilogram

Question 30

time

Answer 30

metric base unit: second (s)
SI unit: s

Question 31

amount of stuff

Answer 31

metric base unit: —-
SI unit: mole (mol)

Question 32

temperature

Answer 32

metric base unit: degree celsius (°C)
SI unit: Kelvin (K)

Question 33

area

Answer 33

derived unit
m*m=m^2

Question 34

volume

Answer 34

derived unit
mmm=m^3

Question 35

density

Answer 35

derived unit
mass/volume
SI unit: kg/m^3

Question 36

density of liquid water

Answer 36

1g/mL

Question 37

Observations

Answer 37

Using one or more senses or a measuring device to gather data, not a test, not opinions, qualitative or quantitative
Ex: that plant is extremely wilted, the care stopped running

Question 38

Inferences

Answer 38

when you make explanations for what you observe, could be scientific opinion, bordering on conclusion
Ex: the plant needs more water, the car ran out of gas

Question 39

% error equation

Answer 39

((experimental value-accepted value)/accepted value)*100%