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Chemisty Final exam
Chemisty Final exam
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A #chemistry exam review
Flashcards
15 cards
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Practice quiz
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Host live
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Questions
15
Answers
1
Which of the following elements is in the same period as phosphorus?
carbon
nitrogen
magnesium
oxygen
2
what is the charge of a cation
positive
negative
3
what is the espression of 5008 km in scientific notation
5.008 x 104 km
5.008 x 103 km
5.008 x10-3 km
50.08x10-4 km
4
The modern periodic table is arranged in order of increasing atomic ____.
radius
number
charge
mass
5
of the elements Pt, V, Li, and Kr, which is a nonmetal?
V
Pt
Li
kr
6
Which type of electromagnetic radiation includes the wavelength 10 m?
radio waves
Gamma
microwaves
visible light
7
Atomic size generally ___
remains constant
Increases as you move left to right
decrease as it moves from top to bottom
8
what is the density of an object having the mass of 8.0 g and volume of 25cm
3
?
3.1 g/cm3
0.32 g/cm3
200 g/cm3
2.0 g/cm3
9
Which scientist developed the quantum mechanical model of the atom?
Ernest Rutherford
Albert Einstein
Niels Bohr
Erwin Schrodinger
10
How are the frequency and wavelength of light related?
Frequency equals wavelength divided by the speed of light.
They are directly proportional to each other.
They are inversely proportional to each other.
11
which of the following is not an example of matter?
smoke
air
heat
water vapor
12
if the temperature changes by 100 K, by how much does it change in C °
0°
273°
100°
37°
13
Each period in the periodic table corresponds to ____.
an energy sub level
a principal energy level
an orbital
an suborbital
14
The study of chemicals that do not contain carbon is called what type of chemistry?
psychical
analytical
bio
inorganic
15
Separating a solid from a liquid by evaporating the liquid is called ____.
solution
distillation
filtration
condensation
