Show:
States of Matter
Particles
Atomic Properties
Chemical and Physical Changes
Other Important Ideas
100
This state of matter has a definite shape and volume.
What is a solid
100

This is the basic unit of mass and energy. 

What is a particle?

100
The subatomic particles (the parts of an atom.)
What are protons, neutrons, and electrons.
100
In this reaction, a solid becomes a liquid when heat energy is added. (Chemical or Physical)
What is a physical reaction.
100

Everything in the universe is made of these two things.

What are matter and energy?

200
This state of matter has no shape or volume.
What is a gas
200

This is the smallest particle of an element 

What is an atom?

200
The inner part of an atom, composed of protons and neutrons.
What is the nucleus.
200
In this reaction, a substance changes color and a burning smell is released. (Chem or Phys)
What is a chemical reaction.
200

The principle stating that matter is not created or destroyed during a chemical reaction

What is the law of conservation of mass?

300
This is the phase change that occurs when a liquid becomes a solid.
What is freezing
300

a group of atoms bonded together forming the smallest unit of a pure substance

 What is a molecule

300
The charge of an electron.
What is negative.
300
In this reaction, there is a temperature decrease and a gas is produced. (Chem or Phys)
What is a chemical reaction.
300

About how many atoms of ink are in a period you typed on your lab report?

a) 100000000

b)1000000000000000000

c)1000

What is b?  About 10 ^18

400
This is the state of matter in which molecules are the most dense.
What is a solid.
400

a solid in which the atoms are arranged in a pattern that repeats again and again

What is a crystal?

400
The charge of a neutron.
What is no charge or neutral.
400

List at least 3 indicators of a chemical change.

What are color change, gas is produced, smell is produced, a new substance forms, unexpected temperature change (without cooling or heating)

400

What causes a physical change from one state of matter to another?

What is a change in temperature?
500
List the 3 states of matter in order from the lowest to the highest energy level.
What is solid, liquid, gas, (and plasmsa)
500
This particle is where chemical reactions really take place

What is an electron?

500
Atoms share these when they bond.
What are electrons?
500
In a chemical reaction, CaOH (calcium hydroxide) and CO2 (carbon dioxide) are _________, CaCO4 (chalk) and H20 (water) are __________. (products, reactants)
What are reactants and products
500

How do you know how many valence electrons an element has?

By its group number (column)