Review for Quiz

Big Ideas about Periodic Table

Dmitri Mendeleyev created the Periodic Table of

Elements

He did this by putting the elements on cards and

rearranging them til he found an arrangement that

worked. He organized them by putting like

elements next to each other in rows (periods) and

columns (groups).

This created gaps in the Periodic Table which

showed elements that were (at the time) yet to be

discovered.

Rules for Elements in the Objects

Main Elements in Objects

1. living objects- carbon, hydrogen, oxygen

2. plastics & once living- carbon, hydrogen

3. metals - iron & oxygen

4. rock-like objects- silicon & oxygen

5. Air - oxygen, nitrogen, and argon

Some Big Ideas about Gas Particles:

Gas is a form of matter.

Gas takes up space.

Gases are composed of individual particles that

are not connected to other particles.

Gas particles are relatively far apart and in

constant motion.

There is nothing between particles of gas except

space.

They can be forced together

through compression.

Some important Vocab not to

forget!!!

Compression is to reduce in volume/size due to

applied force.

Expansion- to increase in volume or size

Contraction- to reduce in volume/size due to

cooling

Big ideas about kinetic energy

Kinetic Energy = heat, when heat is added kinetic

energy increases, when heat is removed kinetic

energy decreases

when kinetic energy increases, the particles

increase in speed (move faster), start bumping

into each other more often and hit each other

harder, and create more space in between

particles

when kinetic energy increases, the

particles expand

when kinetic energy decreases, the

particles contract

This applies to all forms of matter- solid,

liquid, gas