Ɛhia
0.5
Ɛhia
0.5
Ɛhia
0.5
Ɛhia
0.5
Ɛhia
0.5
Ɛhia
0.5
Classify each description as either a chemical or physical change.
firefly glowing
boiling water
baking cookies
glass cup shattering
photosynthesis
sharpening a pencil
inflating a balloon with helium
copper tarnishing
apple rotting
dissolving sugar in water
fall foliage changing color
shredding paper
making ice cubes
fireworks exploding
gasoline burning
Classify each description as either a chemical or physical property.
color
reactivity
melting point
density
volatility (ease of turning into a gas)
solubility (ease of dissolving)
combustibility
flammability
luster (shiny or dull)
malleability
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.
Label each item as one of the following: element, compound, homogeneous mixture, or heterogeneous mixture.
trail mix
carbon (C)
pizza
jello
oil and vinegar salad dressing
table salt (NaCl)
helium (He)
cake batter
copper (Cu)
sugar (C12H22O11)
milk
water (H2O)
Which of the following is a physical change that takes place in the stomach?
Which of the following is a chemical change that takes place in the stomach?
What is one thing you could do to a piece of paper that represents a physical change?
What is one thing you could do to a piece of paper that represents a chemical change?
Picture 5 is best classified as...
Picture 6 is best classified as...
Picture 7 is best classified as...
Picture is 8 best classified as...
Picture 9 is best classified as...
Picture 10 is best classified as...