7.1 Flashcards
What is volume?
Is the amount of space taken up by a subtance
What is matter
Matter is anything that has mass and volume
What is mass?
The amount of space that makes up an object
What is a solid?
Has a fixed shape and volume and the particles can only vibrate
What is a liquid?
Does not have a fixed shape and the particles can pass by each other just not very fast
What is a gas?
The particles are far apart and can move very quickly. They do not have a fixed shape or volume
Can you see the particles that make up matter?
No
What is kinetic energy?
It’s the energy of motion. And explains that all particles are always moving
What does kinetic molecular theory
It explains what happens to matter when the kinetic energy changes.
What is a model?
A way to physically show something.
What is a theory?
Provides scientific explanation based on the result of experiments
What happens when you add energy to a material?
You increase the kinetic energy. The particles will move faster and the material expands ( that’s called thermal expansion)
What happens when you decrease kinetic energy?
The matter contracts and the particles slow down (thermal contraction)
What is heat?
Heat is energy transferred from one material or object to another as a result of change in state of temperature.
What is temperature?
When you take a sampling from an object that is the average kinetic energy and that is the temperature
