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UNIT 3 Review: Atoms & the Periodic Table 2022-23

Total questions: 50

Worksheet time: 31mins

Name
Class
Date
1.
Where is most of an atom's mass located?
a)
in the nucleus
b)
outside the nucleus
c)
both in the nucleus and in the energy levels
d)
atoms don't have mass
2.

Which subatomic particle is NOT found in the nucleus?

a)
proton
b)
neutron
c)
electron
d)
they're ALL in the nucleus
3.
What charge does an electron hold?
a)
positive
b)
negative
c)
neutral
4.
In a neutral atom, the number of protons is EQUAL TO the number of __________.
a)
protons
b)
neutrons
c)
electrons
d)
none of the above
5.
Carbon-14 has an atomic number of 6. How many neutrons does it have?
a)
6
b)
14
c)
8
d)
we cannot determine this information
6.
Lithium-7 has an atomic number of 3. How many protons does it have?
a)
3
b)
4
c)
7
d)
this cannot be determined
7.
Which of the following is TRUE about isotopes?
a)
same element, different masses
b)
same element, same masses
c)
different element, same masses
d)
different element, different masses
8.
An isotope of an element contains different numbers of which subatomic particle?
a)
protons
b)
neutrons
c)
electrons
d)
isotopes don't have different amounts of particles
9.
An isotope of krypton has 36 protons, 47 neutrons and 36 electrons. What is its mass number?
a)
36
b)
47
c)
72
d)
83
10.
How many maximum electrons can fill the 2nd energy level of any Bohr model?
a)
2
b)
4
c)
8
d)
18
11.

How many periods are on the periodic table?

a)

3

b)

7

c)

9

d)

18

12.
How many groups are on the periodic table?
a)
7
b)
10
c)
18
d)
infinite
13.
Which of the following is an alkali metal?
a)
magnesium
b)
oxygen
c)
sodium
d)
aluminum
14.
Which of the following is an alkaline earth metal?
a)
lithium
b)
beryllium
c)
carbon
d)
neon
15.
Which of the following is a transition metal?
a)
copper
b)
aluminum
c)
lead
d)
sulfur
16.
Which of the following is NOT a metal?
a)
hydrogen
b)
strontium
c)
tin
d)
cesium
17.
Krypton falls under which periodic table group?
a)
halogens
b)
noble gases
c)
alkaline earth metals
d)
transition metals
18.
Name two halogens.
a)
Ne & Ar
b)
F & Cl
c)
Na & K
d)
C & Si
19.
Which of these elements can be found in period 3?
a)
phosphorus
b)
nitrogen
c)
scandium
d)
helium
20.
An unknown element conducts electricity and heat well. What can it most likely be classified as?
a)
metal
b)
nonmetal
c)
metalloid
d)
liquid
21.
Which pair of elements are BOTH metals?
a)
lithium & copper
b)
sodium & sulfur
c)
neon & helium
d)
aluminum & carbon
22.
An atom becomes a cation when it ________
a)
loses protons
b)
loses electrons
c)
gains electrons
d)
gains protons
23.
In an ion, the number of _________ is different from the number of __________.
a)
protons, neutrons
b)
protons, electrons
c)
neutrons, electrons
24.
The atomic number for an element ALWAYS indicates the number of ___________.
a)
protons
b)
neutrons
c)
electrons
d)
total subatomic particles
25.
An atom that gains electrons will have a _________ charge.
a)
positive
b)
negative
c)
neutral
26.
Identify PNE for a neutral aluminum atom.
a)
P = 13
N = 13
E = 13
b)
P = 13
N = 14
E = 13
c)
P = 27
N = 14
E = 27
d)
P = 13
N = 27
E = 13
27.

How many electrons can fit on the 2nd energy level of any atom?

a)

2

b)

8

c)

10

d)

18

28.
How many electrons would be in the 2nd energy level of a Bohr model for oxygen?
a)
2
b)
4
c)
6
d)
8
29.

How many electrons would a K+1 ion have?

a)

19

b)

18

c)

20

d)

this cannot be determined

30.
An atom that gains or loses one or more electrons is called an _______.
a)
ion
b)
isotope
c)
isomer
d)
diode
31.
What is the NAME of Group 1 on the P-table?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
32.
What is the NAME of Group 17 on the P-table?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
33.
Which of the following is a metalloid?
a)
Li
b)
Si
c)
P
d)
Ar
34.
Which of the following is a nonmetal?
a)
Na
b)
Al
c)
Ga
d)
N
35.
Most of the elements in the periodic table can be described as _______________.
a)
metals
b)
nonmetals
c)
metalloids
d)
semimetals
36.

What is the mass number for this isotope?

a)

29

b)

14

c)

15

d)

this cannot be determined

37.

Using the isotope notation above, what term would you use for this element?

a)

neutral atom

b)

cation

c)

anion

d)

none of the above

38.

An unknown element is found. Lab tests show that it is malleable and a good conductor. Which of the following elements could it be?

a)

sulfur

b)

hydrogen

c)

krypton

d)

platinum

39.

Which neutral atom does this Bohr model represent?

a)

lithium

b)

boron

c)

carbon

d)

aluminum

40.

Which section/group name does hydrogen fit into?

a)

alkali metals

b)

alkaline earth metals

c)

other nonmetals

d)

overly reactive deadly gases

41.

Using the isotope notation above, determine how many electrons this ion has.

a)

22

b)

12

c)

2

d)

10

42.

How many protons does sulfur-35 have?

a)

16

b)

19

c)

35

d)

this cannot be determined

43.

How many neutrons does sodium-25 have?

a)

11

b)

12

c)

14

d)

we cannot determine this information

44.

An unknown element has 8 protons, 8 neutrons, and 10 electrons. Which of the following is true?

a)

The unknown element can be identified as neon.

b)

The unknown element is a cation.

c)

The unknown element is an anion.

d)

The unknown element is an isotope of its most common form.

45.

Look up palladium on the periodic table (hint: it's a transition metal). What is the most common isotope of palladium?

a)

palladium-46

b)

palladium-106

c)

palladium-60

d)

palladium-107

46.

Adding two electrons produces an ion with a charge of:

a)

+2

b)

2

c)

-2

d)

adding electrons does not affect the charge

47.

Identify the isotope name for the following element:

P=22

N=23

E=22

a)

titanium-22

b)

titanium-23

c)

titanium-45

d)

titanium-48

48.

Rutherford conducted a famous gold foil experiment that resulted in the conclusion that the nucleus of an atom is:

a)

centrally-located & positively-charged

b)

centrally-located & negatively-charged

c)

made up of neutrons & electrons

d)

made up of only protons

49.

6329Cu+2


What is the term for this symbol?

a)

isotope notation

b)

atom symbol

c)

copper anion

50.

6329Cu+2


Which is the correct isotope name for the symbol provided above?

a)

copper-29

b)

copper-63

c)

copper-27

d)

copper-34

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