PRACTICE: classifying matter ECM, chemical & physical changes/properties (2024)
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Last updated about 2 months ago
17 questions
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Question 1
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Question 2
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Classify each description as either a chemical or physical property.
volatility (ease of turning into a gas)
Question 3
3.
A substance that appears to "disappear" might do so because of a chemical change, but it might "disappear" because of a physical change. Explain what (and why!) you would need to look for (evidence!) in order to determine whether the change is chemical or physical.
Question 4
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Question 11
11.
Which of the following is a physical change that takes place in the stomach?
Question 12
12.
Which of the following is a chemical change that takes place in the stomach?
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Question 13 | 00:38
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Question 13
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Question 14
14.
What is one thing you could do to a piece of paper that represents a physical change?
Question 15
15.
What is one thing you could do to a piece of paper that represents a chemical change?
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Question 16 | 04:50
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Question 16
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Question 16
16.
Boiling water is an example of__________
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Question 17 | 04:09
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Question 17
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Question 17
17.
Metal rusting is an example of__________
Classify each description as either a chemical or physical change.
firefly glowing
inflating a balloon with helium
making ice cubes
boiling water
dissolving sugar in water
sharpening a pencil
fireworks exploding
gasoline burning
photosynthesis
baking cookies
copper tarnishing
apple rotting
fall foliage changing color
glass cup shattering
shredding paper
physical change
chemical change
color
luster (shiny or dull)
solubility (ease of dissolving)
density
combustibility
flammability
malleability
reactivity
melting point
physical property
chemical property
Label each item as one of the following: element, compound, homogeneous mixture, or heterogeneous mixture.
trail mix
cake batter
helium (He)
sugar (C12H22O11)
pizza
oil and vinegar salad dressing
jello
water (H2O)
table salt (NaCl)
milk
carbon (C)
copper (Cu)
element
compound
homogeneous mixture
heterogeneous mixture
Question 5
5.
Picture 5 is best classified as...
Question 6
6.
Picture 6 is best classified as...
Question 7
7.
Picture 7 is best classified as...
Question 8
8.
Picture is 8 best classified as...
Question 9
9.
Picture 9 is best classified as...
Question 10
10.
Picture 10 is best classified as...
Question 13
13.
Watch the video of potassium being placed into water, then categorize the following statements as physical or chemical properties.
potassium can be cut with a knife
potassium reacts with water to produce hydrogen gas