Properties of Matter
What are the three main states of matter?
A: Solid, liquid, and gas.
Q: What state of matter has a definite shape and volume?
Solid
Q: What is melting?
A: When a solid changes into a liquid due to heat.
Q: How do particles move in a solid?
A: They vibrate in place and are packed tightly together.
Q: What does the word matter mean?
A: Anything that has mass and takes up space.
Q: What state of matter takes the shape of its container?
A: Liquid.
Q: What is evaporation?
A: When a liquid becomes a gas.
Q: How do particles move in a liquid?
A: They slide past each other and are close but not tightly packed.
Q: What is density?
A: How much matter is in that thing.
Q: When a solid melts into a liquid, what happens to the particles?
A: They gain energy and move faster, spreading apart.
Q: Name one example of a physical change.
A: Cutting paper, melting ice, dissolving sugar, freezing water, etc.
Q: How do particles move in a gas?
A: They move very fast and are spread far apart.
Q:What are the measurements of volume?
A: Length, width, height
Q: What state of matter has particles moving very fast and spread far apart?
A: Gas.
Q: What is one sign that a chemical change has occurred?
A: Colour change, new smell, gas bubbles, heat, or a new substance forms.
Q: What happens to particle movement when heat is added?
A: Particles speed up and move farther apart.
Q: Explain the difference between a physical property and a chemical property.
A: A physical property can be observed without changing the substance (e.g., color), while a chemical property describes how a substance can change into something new.
Q:Explain how to separate water and sugar
A: Evaporation
Q: Explain how heating and cooling can cause matter to change states using a real-life example.
A: Example: Ice cream melts in the sun (solid → liquid), or water freezes into ice cubes in a freezer (liquid → solid).
Q: Compare the spacing of particles in solids, liquids, and gases.
A: Solids: very close together; liquids: close but able to move; gases: very far apart.