Unit 1

Question 1

Precision

Answer 1

How close a SERIES of measurements are to one another

Question 2

Error

Answer 2

Difference between accepted value and experimental value

Question 3

Measuring Scale NumonicTech

Answer 3

M..K H D 🅱 d c m .. 〽️ .. n .. p

Question 4

Antoine Lavoisier

Answer 4

Combustion analysis

Law of conservation of mass

Question 5

Physical Descriptions:

Answer 5

Boil
Freeze
Melt
Condense
Break
Split 
Grind
Cut 
Crush

Question 6

Chemical Descriptions:

Answer 6

Burn 
Rot
Rust
Decompose
Ferment 
Explode
Corrode

Question 7

Pacific Method&raquo_space;»

Answer 7

If decimal is present approach decimal from the pacific, go to first non zero digit and every number to the right of it is sig

Question 8

Atlantic

Answer 8

If decimal is absent approach from the Atlantic go to the first non zero digit and every number to the left of it is significant

Question 9

Pure substance

Answer 9

Sample of matter with both definite and constants, with distinct chemical properties

Question 10

Element

Answer 10

Anything on the periodic table

Question 11

Compound

Answer 11

Mixture of elements

Question 12

Mixture

Answer 12

Physical combination, two or more pure substances combined w/o forming any new substances

Question 13

Physical Properties

Answer 13

• observable w/o changing chemically
• no compositional change
• reversible

Question 14

Chemical Properties

Answer 14

• describes ability to be changed into another substance chemically
• irreversible

Question 15

Electrolysis

Answer 15

Breaking compounds to their element form

Question 16

Intrinsic / Intensive

Answer 16

Independent of the quantity of matter present; inherent characteristics…also called characteristic properties

Question 17

Extrinsic/ Extensive

Answer 17

Directly related to the amount of material being measured… Meaning it will change when you change the amount of substance

Question 18

Organic Chemistry

Answer 18

Study of all chemicals containing carbon

Question 19

Inorganic Chemistry

Answer 19

Study of chemicals without carbon

Question 20

Biochemistry

Answer 20

Study of the process that take place in an organism

Question 21

Analytical Chem

Answer 21

Focuses on the composition of matter

Question 22

Physical Chem

Answer 22

Deals with the energy transfer that occurs when matter goes through change

Question 23

Law of conservation of mass

Answer 23

In any physical or chemical change mass is conserved

Question 24

Accuracy

Answer 24

How close ONE measurement is to its true value

Question 25

Percent error

Answer 25

Error divided by accepted value times 100

Question 26

Joule

Answer 26

the SI unit of energy

Question 27

Kelvin Conversions

Answer 27

Kelvin= 273+ Celsius