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Worksheets

Chemistry Review

Total questions: 23

Worksheet time: 12mins

Name
Class
Date
1.
Class Period
a)
2
b)
3
c)
5
d)
6
e)
7
2.

Maya and Daniel are on a quest to discover the secrets of the periodic table! They stumble upon an element with a glowing symbol. Can you help them figure out how many protons are in this mysterious element?

a)

20.1797

b)

10

c)

20

d)

none of these

3.

Kai and Nora are on a quest to discover the secrets of the periodic table! They stumble upon an element with a glowing symbol 'Ne'. Can you help them figure out how many electrons are in this mysterious element?

a)

20.1797

b)

10

c)

20

d)

none of these

4.

Evelyn and Arjun are on a quest to discover the secrets of the periodic table! They stumble upon an element with the atomic number 13. Can you help them figure out how many electrons are in this element?

a)

26.981538

b)

27

c)

13

d)

none of these

5.

Kai and Ava are exploring the periodic table. They stumble upon an element with the symbol 'Al'. How many protons does this element have?

a)

26.981538

b)

27

c)

13

d)

none of these

6.
Which of these is the correct Bohr model for phosphorus?
a)
Option 1
b)
Option 2
c)
Option 3
d)
Option 4
7.
Which of these is the correct Bohr model for beryllium?
a)
Option 1
b)
Option 2
c)
Option 3
d)
Option 4
8.

Ethan and Abigail are in a science quiz, and they need your help! What is the atomic mass of the element they are studying?

a)

35

b)

17

c)

18

d)

36

e)

Cl

9.

Ava and Priya are exploring the periodic table. They stumble upon an element with the atomic number 17. Can you help them identify the name of this element?

a)

17

b)

18

c)

35

d)

Cl

e)

chlorine

10.

Abigail and Jackson are on a quest to find the atomic number of a mysterious element known for its role in keeping pools clean. Can you help them discover what the atomic number of chlorine is?

a)

17

b)

18

c)

35

d)

Cl

e)

chlorine

11.

Emma and James are playing a fun chemistry quiz game. Can you help them figure out the atomic symbol of this element?

a)

17

b)

18

c)

35

d)

Cl

e)

chlorine

12.

Ethan and Zoe are on a quest to discover the secrets of the periodic table! They've stumbled upon an element with an atomic number of 34 and a mass number of 79. Can you help them figure out how many neutrons are in this mysterious element?

a)

34

b)

45

c)

78

d)

79

13.

Aria and Aiden are on a quest to discover the secrets of the periodic table! Can you help them by finding the atomic number of this mysterious element?

a)

34

b)

78

c)

79

d)

Se

e)

selenium

14.

Elijah and Henry are on a quest to discover the secrets of the periodic table! Can you help them find the atomic mass of this mysterious element?

a)

34

b)

78

c)

79

d)

Se

e)

selenium

15.

Ethan and Emma are on a treasure hunt in the periodic table! They've stumbled upon an element with the atomic number 34. Can you help them find the atomic symbol of this element?

a)

34

b)

78

c)

79

d)

Se

e)

selenium

16.

Jackson and Samuel are on a treasure hunt in the periodic table! They stumbled upon an element with the symbol 'Se'. Can you help them name this element?

a)

34

b)

78

c)

79

d)

Se

e)

selenium

17.

Ethan and Emma are on a chemistry adventure! They just discovered a molecule of ammonia. Can you help them figure out how many atoms are in it? (Enter the number, not the word).

(a)  

18.

Ava and Noah are on a quest to discover the secrets of calcium carbonate! Can you help them by telling how many atoms are in a molecule of calcium carbonate? (enter the number, not the word).

(a)  

19.

Hey science explorers! Charlotte and Aria are on a mission to discover the elements in a molecule of phosphoric acid. Can you help them out? (Check all that apply)

a)

hydrogen

b)

phosphorus

c)

oxygen

d)

carbon

e)

polonium

20.

Ethan and Emma are cooking up a storm in the kitchen! As they watch their ingredients transform, they wonder: What type of change happens to food when it is cooked?

a)

physical change

b)

chemical change

c)

neither

21.

Aiden and Luna are having a science experiment in the kitchen! They watch as water starts to boil in a pot. What type of change is happening to the water?

a)

physical change

b)

chemical change

c)

neither

22.

Nora and Benjamin are having a friendly debate while chopping wood for a campfire. Nora insists that chopping wood is a type of change. What kind of change is she talking about?

a)

physical change

b)

chemical change

c)

neither

23.

Avery and Maya are sitting around a campfire, watching the wood crackle and burn. They start wondering, what type of change is happening to the wood as it burns?

a)

physical change

b)

chemical change

c)

neither