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Chem Unit 1 Test Practice

Total questions: 38

Worksheet time: 40mins

Name
Class
Date
1.
What is the noble gas configuration for beryllium?
a)
[He]1s2
b)
[He]2s2
c)
[Li]2s1
d)
[Li]2s2
2.
What is the noble gas configuration for Sulfur?
a)
[Ar] 3p4
b)
[He] 3s2 3p4
c)
[Ne] 3s2 3p4
d)
[Na] 3s2 3p4
3.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
4.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
5.

SIDE TO SIDE rows on the periodic table are

a)

groups

b)

periods

6.

UP and DOWN columns on the periodic table are

a)

groups

b)

periods

7.

The image shows a portion of the periodic table with four elements labeled P, Q, R, and S.

Which element would have higher metallic reactivity?

Responses


a)

P

b)

Q

c)

R

d)

S

8.

How does the size of an atom in an element change from left to right in a period and down a group in a periodic table?


a)

It decreases in both cases.

b)

It increases in both cases.

c)

It decreases in the first case and increases in the second.

d)

It increases in the first case and decreases in the second.

9.

A student labels the regions of the periodic table that identify metals, metalloids, and nonmetals. Which periodic table is correct?

a)

b)

c)

d)

10.

Which color on the image of the periodic table corresponds with the halogens

a)

Black

b)

Red

c)

Blue

d)

Orange

11.

Which color on the image of the periodic table corresponds with lanthanides?

a)

Red

b)

Blue

c)

Orange

d)

Black

12.

Which color on the image of the periodic table corresponds with the transition metals?

a)

Red

b)

Blue

c)

Black

d)

Orange

e)

Yellow

13.
For an electron to change from ground state to an excited stated it must...
a)
Absorb energy
b)
Release energy
14.
Why are line emission spectra of elements called "atomic fingerprints"?
a)
They are all the same
b)
They are all unique
c)
They are all similar
d)
They all contain colored light
15.

The picture shows an atom in the ground state absorbing energy and the electron jumps to the excited state. Which state has higher energy?

a)

Ground State

b)

Excited State

16.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Helium

17.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

18.

The period that an element is in, tells you what?

a)

Number of protons

b)

Number of electrons

c)

Number of valence electrons

d)

Number of shells

19.
Elements in the same column of the periodic table always have the same # of _______ as one another.
a)
Protons
b)
Neutrons
c)
Electrons
d)
Valence Electrons
20.

As you move across the periodic table, from left to right, the metallic character of the elements________

a)

increases

b)

decreases

c)

stays the same

21.

Which of the following has a larger radius than Zinc

a)

Gallium

b)

Magnesium

c)

Strontium

d)

Aluminum

22.

As you move across a period, do the atoms get smaller or larger?

a)

smaller

b)

larger

23.

Which atom is more electronegative?

a)

K

b)

Rb

c)

Cl

d)

B

24.

What is the best definition of valence electrons?

a)

The outermost electron NOT involved in chemical reactions

b)

The innermost electrons involved in chemical reactions

c)

The outermost electrons involved in chemical reactions.

d)

The innermost electrons NOT involved in chemical reactions

25.

What does Neon need to do fulfill the Octet Rule?

a)

Gain 2

b)

Lose 2

c)

Nothing - it already fulfills the Octet Rule.

26.

What is the rule that elements want to have 8 valence electrons?

a)

Octet rule

b)

Octopus rule

c)

Valence electrons rule

d)

Ion rule

27.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

28.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

29.

Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 72.2% and the abundance of 87Rb is 27.8%, what is the average atomic mass of rubidium?

a)

85.468 amu

b)

37 amu

c)

85.6 amu

d)

86.4 amu

30.

Using the picture, you can determine that Carbon-13 has ____ neutrons.

a)

13

b)

6

c)

12

d)

7

31.

By studying the picture, you can determine that Carbon-13 has ____ protons.

a)

6

b)

13

c)

12

d)

14

32.

Atomic Mass is...

a)

protons + neutrons

b)

neutrons + electrons

c)

protons + electrons

33.

Name this element.

a)

Argon

b)

Chlorine

c)

Aluminum

d)

Boron

34.

How many energy levels are in an atom of aluminum, Al?

a)

1

b)

3

c)

4

d)

2

35.

What element does this Bohr model represent?

a)

Chromium

b)

Magnesium

c)

Carbon

d)

Krypton

36.

The half-life of Uranium is 2.5 x 105 years. What is this in standard form?

a)

2500000

b)

250

c)

25000

d)

250000

37.

Convert 0.0000037 to Scientific Notation.

a)

.37 x 10-7

b)

3.7 x 10-6

c)

37 x 10-5

d)

370 x 10-4

38.
What is scientific notation?
a)
A long way to write really short  numbers
b)
A short way to write really long numbers
c)
I don't know...
d)
None of the above

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