Physical vs. Chemical Changes
Ice melting 🧊
What is physical?
Heat moves from a ______ object to a ______ one.
Warmer → Cooler
Ice melts to water → Weight ______
A. Stays the same B. Increases C. Decreases
A. Stays the same
Cereal with milk —>__________
Mixture or New Substance?
Mixture
What happens to the state of matter when a liquid is cooled?
It condenses or turned into a solid.
Fireworks exploding 🎆
What is Chemical?
Which material keeps ice cream cold the longest?
A. Aluminum pot B. Foam cooler
C. Paper bag D. Metal cup
B. Foam cooler
Salt is added to water → Weight ______
A. Stays the same B. Increases C. Decreases
B. Increases
Salt mixed into water —>__________
Mixture or New Substance?
Mixture (solution)
What kind of material makes a good pan handle?
Plastic or wood (insulator)
Rust forming on a nail
What is Chemical?
Why should you not freeze a full glass bottle of water?
Water expands when it freezes
Pancake batter cooked into pancakes → Weight ______
A. Stays the same B. Increases C. Decreases
C. Decreases due to water evaporating
Pancake batter cooked on the stove —>__________
Mixture or New Substance?
New Substance (chemical change)
How is the shiny foil keeping a salad cool on a sunny day?
Reflecting heat
Paper being cut
What is Physical?
What color sidewalk reflects sunlight best?
White
Logs chopped into mulch → Weight ______
A. Stays the same B. Increases C. Decreases
A. Stays the same
Blended smoothie —>__________
Mixture or New Substance?
Mixture
A log weighs 5 grams before it is burned but the ash weighs 3 grams after.
What happened to the matter when wood burns?
Chemical change/new substance (Smoke and ash)
Baking soda and vinegar bubbling
What is Chemical?
If I want to stay warm would I use a conductor or insulator?
Insulator
Law of conservation of matter says: Matter cannot be _________ or _________.
Created or Destroyed
New Substance (chemical change Vinegar and baking soda —>__________
Mixture or New Substance?
New Substance (chemical change)
What type of change is Kool-Aid in water?
Physical (Solution)