Intro, sig figs, and the metric system

Question 1

What is SI

Answer 1

international system of units (metric system)

Question 2

length is measured in what?

Answer 2

meters (m)

Question 3

mass is measured in what?

Answer 3

grams (g)

Question 4

Volume is measured in what?

Answer 4

liters (L)

Question 5

what is mass?

Answer 5

how much matter is in an object

Question 6

what is volume?

Answer 6

how much space something occupies

Question 7

what is density?

Answer 7

how much stuff is in this space

Question 8

What is accuracy?

Answer 8

how close you are to a real value based on your equipment (equipment’s fault)

Question 9

what is precision?

Answer 9

how good you are at using the equipment (your fault)

Question 10

breaker vs graduated cylinder

Answer 10

beaker is used for stirring, but isnt accurate with mL

grad. cylinder is not used for stirring, but accurate with mL

Question 11

the smaller equipment you use, the more ______

Answer 11

accuracy

Question 12

what does the metric system consist of ?

Answer 12

kilo 1000
hecta 100
deca 10
base 1
deci .1
centi .01
milli .001

Question 13

what is chemistry?

Answer 13

the study of matter and its interactions

Question 14

what is the most basic substance?

Answer 14

element

Question 15

what are elements made of?

Answer 15

atoms

Question 16

what is the order that matte is characterized of?

Answer 16

elements -> atoms -> protons, neutrons, electrons

Question 17

scientific method

Answer 17

observe 
hypothesize
predict
experiment
analyze
compare data

Question 18

what do experiments need?

Answer 18

good methods and variables

Question 19

control

Answer 19

nothing is changed, everything is the same except for changing variable

Question 20

what is under the experimental group?

Answer 20

independent- YOU change

dependent- depends on what changes you made, measured, based on changes

Question 21

law vs theory?

Answer 21

law- statement of observation

theory- explanation of a law

Question 22

what makes up atoms?

Answer 22

protons, neutrons, and electrons

Question 23

how are different elements made?

Answer 23

made of atoms w/ different combinations of protons, neutrons, and electrons

Question 24

when adding or subtracting numbers from sig figs

Answer 24

answer cannot contain more places after the decimal point than the smallest number of decimal
(find the smallest decimal in the problem, the answer can only go to that place)

Question 25

when multiplying or dividing from sig figs

Answer 25

answer cannot contain more significant figures than the number being multiplied or divided with the least number of sig figs.
(find the number in the problem with the least number of sig figs, the answer cannot contain more sig figs than that)