Lesson 1

Question 1

Length, width, height, depth, thickness

Answer 1

Meter (m)

Question 2

mass

Answer 2

grams (g), pounds (lbs) kilograms(kg)

Question 3

Time or duration`

Answer 3

seconds (s), minutes(m) hours(hr)

Question 4

Volume

Answer 4

liter (L)

Question 5

Giga

Answer 5

1gm=10^9 m

Question 6

mega

Answer 6

1Mn=10^6 (1,000,000)m

Question 7

kilo

Answer 7

1km=10^3(1,000)m

Question 8

deci

Answer 8

1dm=10^-1(.1) m

Question 9

centi

Answer 9

1cm=10^-2(.01)m

Question 10

mili

Answer 10

1mm=10^-3(.001)m

Question 11

micro

Answer 11

1MM=10^-6(.000001)m

Question 12

nano

Answer 12

1nm=10^-9m

Question 13

1 pounds = g?

Answer 13

454

Question 14

1 oz = g

Answer 14

28.6

Question 15

1in=cm

Answer 15

2.54

Question 16

12 in=ft

Answer 16

1

Question 17

3ft=yd

Answer 17

1

Question 18

1 gal=L

Answer 18

3.785

Question 19

Solid+heat=liquid

Answer 19

Melting

Question 20

Liquid+cooling=solid

Answer 20

Freezing

Question 21

Liquid+heat=gas

Answer 21

Evaporation/Vaportation

Question 22

Gas or vapor+cooling=liquid

Answer 22

Condensation

Question 23

Solid+heat=Gas

Answer 23

Sublimation

Question 24

Gas cooled=solid

Answer 24

deposition

Question 25

Absolute error/accurucy

Answer 25

true value-measure value

Question 26

Error %

Answer 26

absolute value/true value x 100

Question 27

Systematic error

Answer 27

Error is known

Question 28

Random error

Answer 28

source is not known

Question 29

Unit area

Answer 29

s=L^2

Question 30

Unit volume

Answer 30

L^3

Question 31

Percentage%

Answer 31

parts/total parts x 100

Question 32

Type of atom compostion

Answer 32

Pure substance-have same compostion throughout Mixture-composed of 2 or more pure substance

Question 33

Pure substance | Iron Pyrite (Fe^2S^3)

Answer 33

Element- made of same atom Compound-made of different atom

Question 34

Mixture Salt water | Cake mix

Answer 34

Homogeneous- air, sugar water(chem) Hetegenous- cholate chip cookies, pizza, tossed salad

Question 35

Filtration(making tea)

Answer 35

To separate solid from liquid solution

Question 36

Decantation (water and oil)

Answer 36

To separate 2 liquids from liquid solution | by removing the liquid layer at the top from the layer of solid or liqui

Question 37

Distillation(alcohol)

Answer 37

Separating 2 liquids | through selective evaporation and condensation

Question 38

Physical change

Answer 38

appearance, shape, size, color(reversible by heating and cooling)

Question 39

Chemical change(reaction)

Answer 39

arrangement of atoms in molecules(irreversible by heating and cooling)

Question 40

Type of elements

Answer 40

metal nonmetal semimetal/metalloids noble gas

Question 41

Atomic Number( small top left)

Answer 41

#of protons &# of electrons

Question 42

AMU(Atomic Mass Unit)

Answer 42

1.66x10^-24g

Question 43

Mass number-atomic number

Answer 43

Neutrons