What are the characteristics of physical changes?
Physical changes rearrange particles or alter their energy levels but do not form new substances.
The total mass stays constant when changing between states of matter.
Answer in your head, out loud, or on paper, then tap the card to flip.
What are three examples of physical changes?
1. Changes of state (solid, liquid, gas)
2. Dissolving
3. Breaking objects
Answer in your head, out loud, or on paper, then tap the card to flip.
What are changes of state?
Changes of state describe the transition of matter from one state (solid, liquid or gas) into another state.
Answer in your head, out loud, or on paper, then tap the card to flip.
What is sublimation?
Sublimation is when some substances transition directly between the solid and gas states without entering the liquid phase.
Answer in your head, out loud, or on paper, then tap the card to flip.
Why is ice an unusual solid?
In most substances, density decreases during state change from a solid to a liquid and from a liquid to a gas.
However, water is an anomaly—ice is less dense than liquid water, allowing it to float.
Answer in your head, out loud, or on paper, then tap the card to flip.