Flashback - Changes, Molecules, Reactions
Authored by Scott Meagher
Chemistry, Science
7th - 8th Grade
NGSS covered
Used 64+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following would be an example of a chemical change?
Chopping up a log with an ax
Dissolving sugar in water
Burning a piece of paper
Melting an ice cube
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phase Changes are examples of
Chemical Changes
Physical Changes
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All of the following are clues for a chemical change except
change in temperature
change in phase
color change
odor
Tags
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following would be an example of a physical change?
condensation forming on a mirror while showering
an old iron gate rusting
baking a cake
frying an egg
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do the colored circles in this model represent
chemical bonds
compounds
electrons
atoms
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do the gray "sticks" in this model represent?
compounds
chemical bonds
protons
atoms
Tags
NGSS.HS-PS1-4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the chemical formula for this compound?
C6H12O6
H2O
C2H6O
NH3
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-5
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