Matter Matters
What is matter made of?
Tiny particles that are too small to see.
What happens to the particles when ice melts?
They move more freely as the ice turns into liquid water.
Melting ice—physical or chemical change?
Physical change
What does the conservation of matter mean?
Matter cannot be created or destroyed; it only changes form.
In which state of matter are particles packed tightly together, with little movement?
Solid
True or False? Matter is anything that has mass and takes up space.
True
Do the particles in a solid move?
Yes, they vibrate in place.
Burning wood—physical or chemical change?
Chemical change
True or False? When you melt ice, the total mass of water stays the same.
True
How do particles behave in a liquid compared to a solid?
They are close together but can move around and slide past each other.
Name the three states of matter.
When sugar dissolves in water, where do the sugar particles go?
They spread out evenly in the water, but they are still there.
Tearing paper—physical or chemical change?
Physical change.
If you mix 10 grams of vinegar with 5 grams of baking soda in a sealed container, how much will the container weigh after the reaction?
15 grams (the mass stays the same).
True or False? Gas particles move slower than liquid particles.
False
What state of matter has particles that are tightly packed and only vibrate in place?
Solid
What happens to the particles in a gas if you cool it down?
They slow down and get closer together, potentially forming a liquid.
Mixing vinegar and baking soda—physical or chemical change?
Chemical change.
In a closed system, what happens to the amount of matter during a chemical reaction?
It stays the same.
How does the particle arrangement in a liquid change when it freezes into a solid?
The particles become more tightly packed and move less.
What state of matter has particles that spread out and move freely?
Gas
How are the particles in a liquid different from those in a gas?
Particles in a liquid are close together but can move past each other, while particles in a gas are far apart and move freely.
Rust forming on metal—physical or chemical change?
Chemical change.
Why is it important to use a sealed (closed) system to observe the conservation of matter?
A sealed system ensures that no matter is lost or escapes, allowing you to measure the total amount of matter accurately.
Why do gas particles spread out to fill the space of their container?
Because gas particles move freely and have more energy than the particles in solids or liquids.