States of Matter
What are the three states of matter?
Solid, liquid, gas
What is it called when a liquid becomes a gas?
Evaporation
What is a proton?
A part of an atom with a positive electrical charge
Is oil and water a mixture, solution, or suspension? Why?
It is a suspension because the substances are separated into layers.
What is a physical change?
A change in shape or state where no new substances are created.
What is a property of a solid? Hint: think about its shape and volume
The shape and volume of a solid does not change
What is it called when a solid becomes a liquid?
Melting
What is a neutron?
A part of an atom without an electrical charge.
Is salt and water a mixture, solution, or suspension? Why?
It is a solution because the salt dissolves and spreads evenly throughout the water.
What is a chemical change?
A change where new substances are created.
What is a property of a liquid? Hint: think about its shape and volume
What is it called when a liquid becomes a solid?
Freezing
What is an electron?
A part of an atom with a negative charge.
What is a mixture?
A combination of two or more things that keep their own properties
Is a haircut a physical or chemical change?
What is a property of a gas? Hint: think about its shape and volume
The shape and volume of a gas change to fit its container
What happens to the particles when a liquid encounters heat at its boiling point?
The particles absorb the thermal energy of the heat and move faster and faster, causing it to become a gas.
Which parts of an atom are located in its nucleus (centre)?
Protons and neutrons
What is a suspension?
A type of mixture where the substances settle into layers.
Is rusting a physical or chemical change? Why?
Rusting is a chemical change because a new substance is created.
What happens to the particles when a solid encounters heat at its melting point?
The particles absorb the thermal energy of the heat and move faster and faster, causing it to become a liquid.