Heat Reactions: Melting and Burning
Passage
•
Science
•
7th Grade
•
Practice Problem
•
Hard
Standards-aligned
Kim Cruse
Used 2+ times
FREE Resource
7 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
What is the process called when materials reach a certain temperature and their molecules react with oxygen?
Tags
Remember
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
At what Celsius temperature does wood begin to break down during combustion?
Tags
Understand
3.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Why does the fire go out after you stop adding new logs?
Tags
Analyze
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
What determines whether a material will burn or melt when exposed to heat?
Tags
Analyze
5.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Why does chocolate melt while wood burns in a campfire?
Tags
Analyze
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens on the molecular scale when marshmallows melt?
Energy is added and the freedom of movement increases.
Energy is removed and the freedom of movement decreases.
Energy is added and the freedom of movement decreases.
Energy is removed and the freedom of movement increases.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens at the molecular scale when melted chocolate returns to a solid?
Energy is added and the freedom of movement increases.
Energy is added and the freedom of movement decreases.
Energy is removed and the freedom of movement increases.
Energy is removed and the freedom of movement decreases.
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