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chemical equation

Authored by NOR Moe

Chemistry

8th - 9th Grade

NGSS covered

Used 59+ times

chemical equation
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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many oxygen atoms are present in the following? 
4Ca(OH)2

4
6
8
1

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Fill in the blank to balance the chemical equation. 
2KI  +  ____Cl2 →  2KCl  +  I2

1
2
3
4

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What state of matter is this substance?

solid

liquid

gas

aqueous

Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Identify the number in blue.

Product

Reactant

Coefficient

Subscript

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When balancing this equation, Fe + Cl2 → FeCl3, the correct coefficient for Cl2?

1

2

3

4

Tags

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does this symbol Δ above the arrow mean?

a precipitate is form

heat is supplied

a calalyst is needed

electricity is needed

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Balance this equation, CaCO3(s) → CaO(s) + CO2(g)?

3,1,2

1,1,1

1,3,1

2,6,3

Tags

NGSS.MS-PS1-5

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