States of Matter
This state of matter has a definite shape and volume.
What is a solid?
This is how much space an object takes up.
What is volume?
Cutting paper is what kind of change?
Physical
The tool used to measure mass.
balance
Heat causing ice to melt is an example of energy causing a _________ change.
Physical change
This state of matter takes the shape of its container but keeps the same volume.
What is a liquid?
This is how much matter is in an object.
What is mass?
Rusting metal is what type of change?
Chemical
The tool that is used to measure liquid.
graduated cylinder
Energy can cause matter to change by hearing, cooling or ___________.
Mixing
This state of matter spreads out to fill any space and has no definite shape or volume.
What is a gas?
Name on physical property you can observe without changing the substance.
What is color, size, shape, texture, or density?
Name one sign that a chemical change has occurred.
If you break a rock into pieces, what happens to its mass?
It stays the same.
Why does heating matter often change its state?
particles move faster
Water changing into water vapor is an example of this change of state.
What is evaporation?
Why is melting point considered a physical property?
Because the substance does not change into a new substance.
Why is dissolving sugar in water NOT a chemical change?
Because no new substance was formed.
Why does mass stay the same in a closed system?
because matter is conserved. Never goes away.
Predict what happens to chocolate left in the sun. And what kind of energy is used?
It melts because of heat energy.
Why are gases easier to compress than solids?
Gas particles are far apart with lots of empty space.
Compare two objects: one floats and one sinks. What property explains this difference?
What is density?
A student burns wood and observes smoke and ash. Explain why this is a chemical change.
Because a new substance is formed.
A drink weighs 400g. You add 10 g of sugar. What is the new mass? Why?
410g because matter was added.
Compare what happens when you freeze water vs burn paper.
freezing is a physical change, burning is a chemical change.