wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

CC unit 4 review

Total questions: 49

Worksheet time: 53mins

Name
Class
Date
1.

Which measurement contains a total of three significant figures?

a)

0.125 g

b)

1,205 g

c)

0.012 g

d)

12,050 g

2.

What is the mass number of an atom which contains 21 electrons, 21 protons, and 24 neutrons?

a)

21

b)

66

c)

45

d)

42

3.

Element X has two isotopes. If 72.0% of the element has an isotopic mass of 84.9 atomic mass units, and 28.0% of the element has an isotopic mass of 87.0 atomic mass units, the average atomic mass of element X is numerically equal to

a)

(72.0 + 84.9) × (28.0 + 87.0)

b)

(72.0 × 84.9) + (28.0 × 87.0)

100

c)

(72.0×84.9)*100 +(28.0×87.0)*100

d)

(72.0 - 84.9) × (28.0 + 87.0)

4.

What kind of particle, when passed through an electric field, would be attracted to the negative electrode?

a)

an electron

b)

a neutron

c)

a beta particle

d)

an alpha particle

5.

Which element has a completely filled third principal energy level?

a)

Zn

b)

Ar

c)

Fe

d)

N

6.

What term refers to the region of an atom where an electron is most likely to be found?

a)

orbit

b)

orbital

c)

spectrum

d)

quantum

7.

An atom of an element has the electron configuration 1s²2s²2p². What is the total number of valence electrons in this atom?

a)

6

b)

5

c)

4

d)

2

8.

Given the electron configuration of an atom in the ground state: 1s²2s²2p63s²3p¹ This element is found in the Periodic Table in Period ​ (a)   ​ and Group ​ (b)  

Choose from the below words
3
2
13
4
5
12
15
1
16
9.

Which of the following is the electron configuration of a fluoride ion (F¯) in the ground state?

a)

1s²2s²2p4

b)

1s²2s²2p5

c)

1s²2s²2p6

d)

1s²2s²2p7

10.

A strontium atom differs from a strontium ion in that the atom has a greater

a)

number of electrons

b)

number of protons

c)

atomic number

d)

mass number

11.

Which atom has the smallest atomic radius?

a)

Li

b)

F

c)

Be

d)

C

12.

Potassium forms an ion with a charge of

a)

1+ by gaining one electron

b)

1+ by losing one electron

c)

1- by gaining one electron

d)

1- by losing one electron

13.

What is the empirical formula of a compound with the molecular formula C6H12O6?

a)

C₂H4O2

b)

CH₂O

c)

C3H6O2

d)

C4H8O4

14.

What is the net charge of an ion that has 8 protons, 9 neutrons, and 10 electrons?

a)

1-

b)

2+

c)

1+

d)

2-

15.

Which nuclear emission has the greatest penetrating power?

a)

Alpha Decay

b)

gamma radiation

c)

Beta Decay

d)

They all have the same penetrating power

16.

A sample of an element is malleable and can conduct electricity. This element could be

a)

H

b)

Sn

c)

He

d)

S

17.
If one-fourth of the carbon-14 is remaining then how many half-lives have passed?
a)
1
b)
2
c)
3
d)
4
18.

Match the following

a)
1.

Beta

b)
2.

Alpha

c)
3.

Neutron

d)
4.

Gamma

e)
5.

Positron

19.
Where does radioactivity have application in our lives?
a)
Medicine
b)
Energy (electricity)
c)
Agriculture
d)
All of the above
20.

A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?

a)

1/2

b)

1/3

c)

1/16

d)

1/8

e)

1/6

21.
Sulfite
a)
S2O3-2
b)
O2-2
c)
SO4-2
d)
SO3-2
22.

Monatomic ions, consist of a ............... atom

a)

More than two

b)

two

c)

single

23.

A ..................... ion is composed of more than one atom and behaves as a unit and carries a charge.

a)

Monoatomic

b)

diatomic

c)

polyatomic

24.

Is Fe2 a diatomic element?

a)

Yes

b)

No

25.

Is K2 a diatomic element?

a)

Yes

b)

No

26.

What are diatomic elements?

a)

Elements that form two-atom molecules when not combined in a compound.

b)

Two elements that combine with one atom from each element.

c)

Elements that are always in pairs no matter what.

27.

Is O2 a diatomic element?

a)

Yes

b)

No

28.

The AVERAGE kinetic energy of an objects particles.

a)

Heat

b)

Temperature

c)

Specific Heat

d)

Thermal Energy

29.

Hydrogen Carbonate (bicarbonate)

a)

HCO3–

b)

CO32–

c)

CrO42–

d)

CN–

30.

NO3-

a)
ammonium
b)
nitrite
c)
nitrate
d)
nitrile
31.

NH4+

a)
ammonium
b)
acetate
c)
sulfate
d)
arsenate
32.

5. A gas has a volume of 240.0mL at 25°C and 0.789 atm. Calculate its volume at STP.

a)

Ideal Gas Law

PV=nRT

b)

Combined Gas law

P1V1n1T1=P2V2n2T2\frac{P_1V_1}{n_1T_1}=\frac{P_2V_2}{n_2T_2}

c)

Ideal Gas Law

(PV=nRT) + molar mass

d)

STP (1 mole = 22.4)

33.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
34.

1) (Beta) Strontium-90 has a half-life of 28.8 years, how long will it take for 1.00 g of strontium-90 to decay to 0.03125 g?

                                  

a)

9037Rb\frac{90}{37}Rb

b)

9440Zr\frac{94}{40}Zr

c)

9039Y\frac{90}{39}Y

d)

9038Sr\frac{90}{38}Sr

e)

0+1e\frac{0}{+1}e

f)

0−1e\frac{0}{-1}e

g)

42He\frac{4}{2}He

1
2
3
1)
2)
3)
35.
This is an example of ---
a)

combustion

b)
Nuclear Fission
c)
Nuclear Fusion
d)
Fossil fuel reaction
36.

Nuclear fission

a)
b)
c)
37.

What do you find here?

a)

Nuclear fusion

b)

Nuclear fission

38.

What do you find here?

a)

Nuclear fusion

b)

Nuclear fission

39.

Which of the following is an intensive property of matter?

a)

Mass

b)

  • Volume

c)

  • Density

d)

  • Length

40.

If you double the amount of a substance with an intensive property, what happens to that property?

a)

  • It remains the same.

b)

  • It becomes unpredictable.

c)

  • It doubles.

d)

  • It decreases.

41.

Which of the following is an extensive property of matter?

a)

  • density

b)

  • Color

c)

  • Weight

d)

  • Melting point

42.

Nickel(III) would be isoelectric with which element?

A
B
C
D
E
F
G
43.

Match the picture with the measurement.

a)

1 gram (g)

b)

1 kilogram (kg)

44.

What type of mixture is this?

a)

Homogenous

b)

Heterogenous

45.

Label the PES with the number of electrons for each peak

a)

4 e-

b)

7e-

c)

5e-

d)

1 e-

e)

6 e-

f)

2 e-

1
2
3
1)
2)
3)
46.

Count the electrons -
What atom is represented

a)

Boron

b)

Neon

c)

Magnesium

d)

Sodium

e)

Florine

47.

Summary: Ions vs. Isotopes

  1. 1. carbon-12 & carbon-14 ​ (a)  

  2. 2. 32S and 32S-2 ​ (b)  

  3. 3. 70Ga and 72Ga ​ (c)  

  4. 4. Thorium-232 and Thorium-238 ​ (d)  

  5. 5. 65Cu and 65Cu+2 ​ (e)  

Choose from the below words
isotopes
ions
48.
The following is what type of reaction:
NH3 + HCl  → NH4Cl
a)
Synthesis
b)
Decomposition
c)
Single Replacement Replacement
d)
Double Replacement Replacement
49.

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

a)

It is an exothermic reaction

b)

It is an endothermic reaction

Similar Resources on Wayground

untitled

53 questions

untitled

quiz

Worksheet

•

10th Grade - University

MIDTERM QUIZ NO. 2

51 questions

MIDTERM QUIZ NO. 2

quiz

Worksheet

•

University

химия тест 9 сынып

50 questions

химия тест 9 сынып

quiz

Worksheet

•

9th Grade - University

LATIHAN PARTIKEL PENYUSUN BENDA 2024

50 questions

LATIHAN PARTIKEL PENYUSUN BENDA 2024

quiz

Worksheet

•

9th Grade - University

QUIZ CHEMISTRY OF ENGINEERING MATERIALS

50 questions

QUIZ CHEMISTRY OF ENGINEERING MATERIALS

quiz

Worksheet

•

University

Chemistry Regent Exam-June 2011

50 questions

Chemistry Regent Exam-June 2011

quiz

Worksheet

•

KG - University

Chemistry Review

54 questions

Chemistry Review

quiz

Worksheet

•

8th Grade - University

IG1.6温习

54 questions

IG1.6温习

quiz

Worksheet

•

7th Grade - University