Physical v Chemical (Easy)

Quiz
•
Science
•
8th Grade
•
Hard
+1
Standards-aligned
Jenna Vujic
FREE Resource
50 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a physical change?
A change that forms a new substance
A change in shape or state with no new substance
A change that burns material
A color change that cannot be reversed
Answer explanation
A physical change involves a change in shape or state, such as melting or freezing, without creating a new substance. This distinguishes it from chemical changes, which do form new substances.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is an example of a chemical change?
Water freezing
Paper being cut
Wood burning
Ice melting
Answer explanation
Wood burning is a chemical change because it transforms the wood into ash and gases through combustion, altering its chemical structure. In contrast, freezing, cutting, and melting are physical changes.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must happen for a chemical change to occur?
A new shape forms
A new substance forms
Temperature drops
A solid melts
Answer explanation
For a chemical change to occur, a new substance must form. This distinguishes chemical changes from physical changes, where the substance remains the same despite changes in shape or state.
Tags
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is a sign of a chemical change?
Folding a piece of paper
Dissolving sugar in tea
Gas bubbles forming in a reaction
Crushing a rock
Answer explanation
Gas bubbles forming in a reaction indicate a chemical change, as it shows a new substance is being produced. The other options involve physical changes, where the substance's chemical identity remains the same.
Tags
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which change is only physical?
Baking a cake
Rusting iron
Melting butter
Fireworks exploding
Answer explanation
Melting butter is a physical change because it only alters the state of the butter from solid to liquid without changing its chemical composition. In contrast, baking a cake, rusting iron, and fireworks exploding involve chemical changes.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens in a chemical change?
A substance keeps its identity
Atoms rearrange to form something new
No change in temperature
Matter disappears
Answer explanation
In a chemical change, atoms rearrange to form new substances, altering their identity. This distinguishes chemical changes from physical changes, where the substance retains its identity.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is not a sign of a chemical change?
Color change
Temperature change
Formation of gas
Breaking into smaller pieces
Answer explanation
Breaking into smaller pieces is a physical change, not a chemical one. In contrast, color change, temperature change, and gas formation indicate a chemical change due to new substances being formed.
Tags
NGSS.MS-PS1-2
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