Obavezno
0.5
Obavezno
0.5
Obavezno
0.5
Obavezno
0.5
Obavezno
0.5
Obavezno
0.5
Classify each description as either a chemical or physical change.
glass cup shattering
baking cookies
sharpening a pencil
inflating a balloon with helium
firefly glowing
fall foliage changing color
boiling water
apple rotting
copper tarnishing
fireworks exploding
dissolving sugar in water
photosynthesis
making ice cubes
shredding paper
gasoline burning
Classify each description as either a chemical or physical property.
density
volatility (ease of turning into a gas)
color
solubility (ease of dissolving)
malleability
reactivity
luster (shiny or dull)
combustibility
melting point
flammability
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.
cake batter
jello
sugar (C12H22O11)
table salt (NaCl)
copper (Cu)
helium (He)
pizza
carbon (C)
oil and vinegar salad dressing
trail mix
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...