States of Matter
When a substance freezes it changes from a _______ to a _______
Liquid; Solid
What are molecules made out of?
Atoms
What is the name of the table that shows an organized list of all the atoms that people have discovered?
The Periodic Table of Elements
When two kinds of liquid molecules are attracted they will
Mix together and become difficult to separate.
Is the air around us made of matter?
Yes
When a liquid sits in the sun for long enough it will go through the process of
Evaporation
In the chemical formula H20 what does the 2 stand for?
2 Hydrogen Atoms
What is the smallest atom?
Hydrogen
Name an example of two liquids that mix together easily.
How can you tell if something is made of matter?
It takes up space
What is condensation?
Condensation is the process of a gas changing into a liquid
Molecules spread out when
It gets hotter or when there is less pressure
Name the two different atoms that are present in water
Hydrogen and Oxygen
Name an example of a solid and a liquid that do not mix together
Which has more matter in it? A balloon that is a foot wide or a steel ball that is 6 inches wide.
When a substance starts changing from a solid to a liquid to a gas, the molecules are.
Name three different molecules that we have talked about in class.
What are atoms made out of?
Electrons, Protons and Neutrons
When a liquid is not attracted to a solid it will leave behind what in a liquid?
Sediments
Which of the following is the largest: protons, electrons, or neutrons?
A neutron
When a substance starts changing from a gas to a liquid to a solid, the molecules are
Getting slower and moving closer together
What is the only thing that we have talked about that is not made of molecules?
Light
How much of an atom is empty space?
99%
How can you mix together two liquids that are not attracted?
By using an emulsifier
Our salad dressing could be made out of ingredients like: water, vegetable oil, sugar, citric acid, pepper, cumin, or vinegar.