Unit 1 Chemistry Fundamentals and Stoichiometry

Question 1

The Unit For Length

Answer 1

mcm

Question 2

The Unit For Volume

Answer 2

L, mL

Question 3

The Unit For Mass

Answer 3

kg, g

Question 4

How is length measured

Answer 4

ruler

Question 5

How is volume measured

Answer 5

graduated cyclinder, burette for titrations, volumetric flask for dilutions

Question 6

How is mass measured

Answer 6

balance

Question 7

1L = ?mL

Answer 7

1000 mL

Question 8

1kJ = ?J

Answer 8

1000 J

Question 9

1m= ? nm

Answer 9

10^(9)

Question 10

T(k) = T(c) + ?

Answer 10

273

Question 11

How to calculate density

Answer 11

Mass/Volume = Density

Question 12

How to calculate volume

Answer 12

mL - mL = v

Question 13

Distillation

Answer 13

Separates a mixture of liquids with different boiling points

Question 14

Decantation

Answer 14

Separated substances based on density

Question 15

Filtration

Answer 15

separates liquid from an insoluble solid

Question 16

Evaporation

Answer 16

Separates a soluble solid (dissolved in liquid) from liquid

Question 17

Chromatography

Answer 17

Often based on differences in solubility

Question 18

Paper chromatography

Answer 18

Paper is then placed into a beaker or jar with the mobile phase at the bottom

Question 19

Column Chromatography

Answer 19

Mixture to be separated is added to the top of the column and the mobile phase is also added on top of that

Question 20

Three Major Components of an atom

Answer 20

Neutrons, protons, electrons

Question 21

To get neutrons you ___________

Answer 21

subtract the atomic mass from the atomic number

Question 22

Writing isotopes symbol

Answer 22

Mass number on the top left, Chemical symbol, Atomic number on the bottom left

Question 23

Writing isotopes name

Answer 23

The name of the elements then the mass # on the top left
ex: cobalt-60

Question 24

How to get the # of protons and electrons

Answer 24

atomic mass is the protons and electrons

Question 25

Yellow light from a lamp has a wavelength of 589 nm, what is the frequency? (c =λ𝜈)

Answer 25

3 x 10^(8)/5.89 x 10 ^
(-7) = 5.89 x 10 ^
(-7) / 5.89 x 10 ^
(-7) = 5.09 x 10 ^(14) s^(-1)

Question 26

E=hv

Answer 26

E= 6.626 x 10^(-34) v

Question 27

E= hv/𝜈

Answer 27

same thing as the last one but you divide

Question 28

E = ______

Answer 28

energy

Question 29

H = _______

Answer 29

planck’s constant

Question 30

C=___________

Answer 30

speed of light

Question 31

λ=_______

Answer 31

wavelength

Question 32

v = ___________

Answer 32

frequency