States of Matter
The change from a solid to a liquid is called this.
What is melting?
Density is a measure of how much of this is packed into a given space.
What is mass?
This type of substance has only one type of particle throughout and has consistent properties.
What is a pure substance?
A mixture in which the substances are evenly spread out and look the same throughout, like saltwater.
What is a homogeneous mixture?
This is the process where a liquid turns into a gas.
What is evaporation?
If an object has a higher density than water, it will do this in water.
What is sink?
Water (H₂O) is considered a pure substance because it is always made of the same elements in the same amounts. Name the two elements in water.
What are hydrogen and oxygen?
A mixture where the different parts can be seen, like a salad.
What is a heterogeneous mixture?
When a gas cools down and changes back into a liquid, it is called this.
What is condensation?
If an object has a lower density than water, it will do this in water.
What is float?
These are substances made up of 2 or more pure substances
What is a mixture?
This is a process that can separate salt from water by turning the water into a gas.
What is evaporation?
The change from a liquid to a solid is known as this.
What is freezing?
The formula for density is mass divided by this.
What is volume?
Sand and coffee are examples of this
What is a mixture?
This term describes the substance that dissolves in a solution, like salt in saltwater.
What is a solute?
In this state of matter, particles are spread out and move quickly.
What is gas?
This is the process where a solid changes directly into a gas without becoming a liquid first.
What is sublimation?
This is the term for when two objects have the same mass, but one takes up more space than the other, meaning it has lower density.
What is volume
Oxygen and gold are examples of these
What is a pure substance?
This is the term for the liquid in which a solute dissolves, like water in saltwater.
What is a solvent?