Definitions
tiny particles which make up everything
The three states of matter
What are solids, liquids, and gases?
A type of change in which a substance changes shape or phase, but nothing new is produced.
What is a physical change?
An example of a solution
What is sugar water?
(Answers can vary)
How would you separate a mixture of water and sand?
Filtering
a particle made of several atoms linked together
What is a molecule?
A transformation from one state of matter to another, such as evaporation or freezing.
What is a phase change?
A young girl breaks a graham cracker in half. What type of change is this?
A physical change
An example of a mixture
Trail mix
(Answers can vary)
A 150 gram ice cream sundae melts into a bowl of ice cream soup. What is the mass of the ice cream soup?
150 grams
A combination of two or more substances that cannot easily be separated
What is a solution?
A state of matter which has a definite shape, volume, and mass. All the molecules are packed together.
What is a solid?
A dad sets fire to a pile of leaves. What kind of change is this?
A chemical change
Is chili a mixture or a solution?
A mixture
A bowling ball and a beach ball are both thrown into a lake. Which one has the greater density, and how do you know?
The bowling ball, because it will sink.
A combination of two or more substances that can easily be separated
What is a mixture?
A state of matter which has a definite mass and volume, but no definite shape. The molecules take the shape of the container.
What is a liquid?
A bowl of cat food left out on the porch begins to rot, turning green and smelly. What kind of change is this?
A chemical change
Is coffee a mixture or a solution?
A solution
Give one example to show that matter is made of particles too small to be seen.
Blowing up a balloon
Carbon dioxide gas
What is density?
A state of matter which has no definite shape, mass, or volume. The substance expands to fill the container.
What is a gas?
Sugary water freezes into a green popsicle. What kind of change is this?
A physical change
Is Kool-Aid a mixture or a solution?
A solution
What is the best method for separating oil and water?
Density