What is matter?
What is matter?
What is anything that has mass and takes up space
True or false: All matter is made up of tiny particles called atoms and molecules?
True
What is a physical change?
What is a change in one or more physical properties of a substance such as shape size or state of matter without changing its chemical composition
What is Density?
What is the measure of how tightly packed the particles in a substance are.
Give an example of melting
What is a candle burning, what is an ice cube burning
What are the three states of matter?
Solid, Liquid, Gas
What happens to the particles in a solid when the object is heated?
They come close together and move slower
What is a chemical change?
What is a change in the chemical composition of a substance resulting in a formation one or more new substances.
What is mass?
What is the amount of matter in an object.
Give an example of freezing.
Freezing of water to ice
Making popsicles
What is matter made of?
atoms and molecules
What is the process of a liquid turning into a gas called?
What is evaporation.
Explain the difference between a chemical and physical change.
A physical change no new substance is created a chemical change a new substance is formed.
What is volume?
What is the amount of space an object or substance occupies.
Give an example of evaporation
drying of clothes
water boiling
How do particles behave in solids, liquids, and gases?
Solids, particles are closely packed together
Liquids, particles are loosely packed together
Gasses, particles are widely spaced apart.
State the four changes in states of matter.
Evaporation, Melting, Freezing, and Condensation
What are some characteristics of a physical change?
change in shape or size
change in state
change in color
change in density or weight
change in transparency
no new substances formed
What does it mean to say something is dense and less dense?
It means its particles are packed closely together.
If it's less dense, it's particles are spread out.
Describe two ways a state of matter can change to another state of matter.
A solid can change into a liquid when it goes through the process of melting.
Provide an example for each state of matter and which one has a definite shape or volume.
Gas: Air Helium Oxygen Carbon Dioxide
Liquid: water, milk, and juice
Solids: books, rocks, tables
A solid has a definite shape and volume
Explain what happens in condensation
is the process by which a gas is cooled and transformed into a liquid. This occurs when the temperature of the material reaches its condensation point.
What are some characteristics of a chemical change?
change in temperature
change in odor or smell
change in ph (acidity or basicity)
Irreversible change
formation of a gas or bubbles
What is the equation to measure density?
Density = Mass / Volume
Describe the evaporation process.
is the process by which a liquid is heated and transformed into a gas. This occurs when the temperature of the material reaches its boiling point.