Chemical Equations and Reactions
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
Enhance your content
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these is NOT a sign of a chemical change:
color change
unexpected temperature change
phase change
gas/bubbles/odor
Tags
NGSS.MS-PS1-2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is true regarding the law of conservation of mass?
It dictates that the number of molecules on each side of a chemical equation must be the same.
It dictates that the number of atoms of each element must be the same on both sides of a chemical equation.
It states that the mass of the reactants must remain constant in order for a chemical reaction to proceed.
It does not apply to chemical reactions.
Answer explanation
The number of molecules does not have to be the same because lots of molecules could be needed to make one new one. However, the number of each type of atom does need to be the same.
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following may indicate that a chemical reaction has occured?
release of energy as light
a color change
gas bubble formation
all of these
Tags
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does CH4 represent in the balanced chemical equation: C + 2 H2 --> CH4
atom CH4
atoms CH4
molecule CH4
g CH4
Answer explanation
Balanced chemical equations can be interpreted in terms of molecules of a compound or moles of a compound.
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT true regarding a properly written chemical equation?
It must be balanced.
It must contain proper chemical formulas.
It must show the formation of a precipitate or a gas.
It should represent known data.
Answer explanation
There are many signs that a chemical reaction has taken place. Formation of a precipitate or a gas is not required, but could be an indicator that a reaction has occurred.
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a chemical equation, the formula of a substance in water solution is followed by the symbol
(l)
(s)
(g)
(aq)
Answer explanation
aq = aqueous solution which means that the substance is dissolved in water
s = solid
l = liquid
g = gas
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1, 1, 1, 1
1, 2, 2, 1
2, 1, 2, 1
2, 1, 1, 2
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-2
NGSS.MS-PS1-5
Create a free account and access millions of resources
Create resources
Host any resource
Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever
or continue with

Microsoft
%20(1).png)
Apple

Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?
Similar Resources on Wayground
13 questions
Wind Energy
Quiz
•
9th - 10th Grade
12 questions
Electronic Switches
Quiz
•
9th - 12th Grade
10 questions
Rate of chemical reactions
Quiz
•
9th Grade
20 questions
Astronomy by Sakarya Bilsem
Quiz
•
3rd - 8th Grade
14 questions
Unit 2 AOS 1 - Groups, Obedience & Conformity (5)
Quiz
•
11th Grade
10 questions
IMPERFECTIONS IN SOLID AND PHASE DIAGRAM
Quiz
•
University
10 questions
8th grade Unit two Lessons 6-7
Quiz
•
8th Grade
10 questions
7.1 The Erosion-Deposition Process
Quiz
•
8th Grade
Popular Resources on Wayground
20 questions
Brand Labels
Quiz
•
5th - 12th Grade
11 questions
NEASC Extended Advisory
Lesson
•
9th - 12th Grade
10 questions
Ice Breaker Trivia: Food from Around the World
Quiz
•
3rd - 12th Grade
10 questions
Boomer ⚡ Zoomer - Holiday Movies
Quiz
•
KG - University
25 questions
Multiplication Facts
Quiz
•
5th Grade
22 questions
Adding Integers
Quiz
•
6th Grade
10 questions
Multiplication and Division Unknowns
Quiz
•
3rd Grade
20 questions
Multiplying and Dividing Integers
Quiz
•
7th Grade
Discover more resources for Science
20 questions
Physical and Chemical Changes
Quiz
•
8th Grade
22 questions
Newton's Laws of Motion
Lesson
•
8th Grade
12 questions
Phases of Matter
Quiz
•
8th Grade
20 questions
Distance Time Graphs
Quiz
•
6th - 8th Grade
21 questions
Balanced and Unbalanced Forces
Quiz
•
8th Grade
10 questions
Exploring Newton's Laws of Motion
Interactive video
•
6th - 10th Grade
12 questions
Speed, Velocity, and Acceleration
Lesson
•
6th - 8th Grade
19 questions
Forces and Motion
Lesson
•
6th - 8th Grade