Particle Models
Everything that has mass and takes up space.
What is Matter?
This property describes how heavy an object is or the amount of matter inside it.
What is mass?
The scientific law stating that matter cannot be created or destroyed during a change.
What is the Law of Conservation of Mass?
Tearing a sheet of paper into small pieces is an example of this type of change.
What is a physical change?
The three common states of matter studied in 5th grade.
What are solids, liquids, and gases?
All matter is made of these building blocks that are far too small to be seen with your eyes
What are atoms / particles?
Name four physical properties used to sort solid materials.
What are color, hardness, flexibility, reflectivity, or conductivity?
The total weight of the liquid water after melting a 50-gram ice cube.
What is 50 grams?
Baking a cake, iron rusting, or wood burning into ash.
What are chemical changes?
The state of matter that has a definite shape and a definite volume.
What is a solid?
Pumping air into a flat basketball adds more of these, making it heavier and firmer.
What are air particles?
If an object allows electricity or heat to pass through it easily, it has high..
What is conductivity?
The weight of a puddle left behind by a completely melted 100-gram snowman.
What is 100 grams?
This is how you know mixing two substances caused a chemical change rather than a physical mixture.
What is a new substance is formed?
The state of matter that takes the shape of its container but keeps a fixed volume.
What is a liquid?
What happens to sugar particles when you stir them into warm tea until they disappear.
What is dissolving?
A non-destructive test to tell identical aluminum and wood cubes apart.
What is testing for magnetism or floating in water?
The total weight on a scale after mixing 20 grams of salt into 200 grams of water.
What is 220 grams?
Freezing juice into a popsicle is this type of change because it can turn back into a liquid.
What is a physical change?
The state of matter that has no fixed shape and expands to fill its container completely.
What is a gas?
Two real-world examples providing evidence that matter is made of invisible particles.
What are inflating a ball and dissolving sugar?
The amount of Mass that is packed into a particular space.
What is density?
When heating, cooling, or mixing matter, the graph line for total weight should show it doing this.
What is remaining constant?
Bubbles forming when you mix baking soda and vinegar indicates this happened.
What is a chemical reaction?
This type of energy is added or removed to cause a change in the state of matter.
What is thermal energy?