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Midterm Review Chemistry 2025

Total questions: 42

Worksheet time: 48mins

Name
Class
Date
1.

Identify which category the three elements fall into.


Mo, Pt, Zr

a)

Metal

b)

Nonmetal

c)

Metalloid

2.

Identify which category the three elements fall into.


Neon, Hydrogen, Iodine

a)

Metal

b)

Nonmetal

c)

Metalloid

3.
Which of the following is an example of an IONIC COMPOUND?
a)
NaCl
b)
H2O
c)
CO2
d)
NO
4.
Which of the following is an example of a COVALENT COMPOUND?
a)
H2S
b)
KI
c)
CaCl2
d)
MgO
5.

What type of bond is formed between Li and F?

a)

Covalent

b)

Ionic

c)

Metallic

d)

Carbon

6.

Which of the following is a Covalent compound?

a)

NaCl

b)

CaCl2

c)

KI

d)

CO

7.

Is hydrogen (H) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

8.

Is gold (Au) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

9.

Is oxygen (O) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

10.

Is copper (Cu) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

11.

Is sulfur (S) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

12.

Is aluminum (Al) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

13.

Is chlorine (Cl) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

14.

Is iron (Fe) a metal or a nonmetal?

a)

Metal

b)

Nonmetal

15.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
16.
Identify the Electron Configuration for Aluminum (Al)
a)
1s2 2s2 2p6 3s2 3p1
b)
1s2 2s2 2p6 3s2 3p3
c)
1s2 2s2 2p6 3s2 4p1
17.

Choose the correct shortcut configuration for iodine.

a)

[Ar]4s24d104p5

b)

[Kr]5s24d105p5

c)

[Xe]5s25d105p5

d)

none of the above

18.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
19.
Which element is depicted from this atomic orbital diagram?
a)
Carbon
b)
Nitrogen
c)
Oxygen
d)
Phosphorus
20.

What is incorrect about this orbital diagram?

a)

Both arrows in the 2p box should be pointing up

b)

Nothing

c)

One of the electrons in the first 2p box should be placed in the second 2p box, still pointing down

d)

One of the electrons in the first 2p box should be placed in the second 2p box, pointing up

21.

Which example shows a violation of Hund's Rule?

a)

A

b)

B

c)

C

d)

D

22.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Hund's
b)
Aufbau's
c)
Pauli's Exclusive
23.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
24.
For the reaction represented by the equation Cl2 + 2KBr → Br2 + 2KCl, how many grams of potassium chloride can be produced from 356 grams potassium bromide?
a)
749 g
b)
225 g
c)
479 g
d)
814 g
25.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
26.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
27.
Is this balanced?...
Fe + S --> FeS
a)
YES!
b)
NO!
28.
KNO3 --> KNO2 + O2
What coefficients are needed to balance the reaction?
a)
2, 2, 1
b)
2, 3, 2
c)
1, 2, 2
d)
1, 3, 1
29.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

30.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

31.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

32.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

33.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

34.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

35.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

36.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

37.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

38.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

39.

The frequency of violet light is 7.5x1014 Hz. What is its wavelength?

a)

4.0x10-7 m

b)

4.0x107 m

c)

2.25x1023m

d)

2.25x1023 Hz

40.
Violet light has a wavelength of
4.10 x 10-12  m. What is the frequency?
a)
1.23 x 10^ -3 Hz
b)
7.31 x 10^ 19 Hz
c)
1.37 x 10^12 Hz
d)
3.0 x 10^ 8 Hz
41.

Calculate the energy of one photon of yellow light the has a wavelength of 589 nm. What answer selection best fits the calculation in this problem?

a)

3.37 x 10-19 J

b)

3.37 x 10-18 J

c)

3.37 x 10-20 J

d)

3.37 x 1019 J

42.

What is the energy of a quantum of light with a frequency of 7.39x1014Hz.

a)

4.88x1019

b)

4.88x10-19

c)

2.22x1023

d)

2.22x10-23

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