Science Unit 2 Flashcards
What is the particle theory of matter?
What we know about particles and their behaviour.
What is the first rule of the particle theory of matter?
All matter is made with particles too small to be seen
(Different matter is made from different particles and different particles behave differently)
what is the second rule of the particle theory of matter?
Particles are ALWAYS moving!
What is the third rule of the particle theory of matter?
Particles have small spaces between them.
What are the three states of matter?
Solids, liquids, and gas
What are the characteristics of Solids? (3 answers)
It has a fixed volume AND shape
The particles move slowly
The particles are packed tightly together
What are the characteristics of Liquids? (4 Answers)
Fixed volume
No fixed shape
Particles move faster
Particles are loosely packed
What are the characteristics of gas? (5 answers)
No fixed shape or volume
Will escape unless trapped
Fills whatever its in
Particles move quickly
particles are far away from eachother
What is energy?
Is a property of a substance
What does high heat equal and what does low heat equal?
High heat= high energy
low heat= low energy
Where does high energy move to?
a place of low energy
(like diffusion)
What is temperature?
A way of measuring the internal energy in an object (how fast the particles are moving)
How can temperature be measured? (2 answers)
Touch and sight
What are the problems with these methods? (2 answers)
Safety and reliability
What is a thermometer?
A device to RELIABLY measure temerature.
Scale =?
Celsius
Units =?
Degree
