Solid, Liquids, Gases
Chemical/Physical Changes
Atomic Structure and the Periodic Table
Ionic/Covalent Bonds
Acids/Bases
100

In what state of matter are molecules closest together and the most ordered?

Solid

100
What type of change (physical/chemical) takes place when only the appearance has been changed?
Physical Change
100
The inner part of an atom that contains the protons and the neutrons is called the __________.
Nucleus
100
A Metal and a Nonmetal form a(n) ___________ bond?
Ionic Bond
100

Acids have a pH in what range?

1 - 6.9

200
Do the molecules in solids, liquids, or gases remain in constant motion? Which state of matter has molecule moving the slowest?
Yes (true) Solids
200
What type of change (physical/chemical) takes place when only the properties have been changed?
Chemical Change
200
A strong force is required to keep the nucleus intact because the _______ repel each other?
Protons
200

A Nonmetal and a Nonmetal form a(n) _________ bond?

Covalent

200
Bases have a pH in what range?
7.1 - 14
300
THIS is better in solids and liquids than in gases because the particles are arranged close together causing bumping and colliding.
Conduction
300
What are three (3) examples of a physical change?
Answers may vary. Melting, Freezing, Boiling, Condensation, etc.
300

Name two (2) elements that have similar properties.

Answers may vary. Ca and Be

300
A(n) __________ bond has a low melting point and are usually gases at room temperature.
Covalent
300
What is the formula for Hydrofluoric Acid?
HF
400
In order for the transfer of heat through conduction to occur, WHAT must happen.
Direct contact
400
What are three (3) examples of a chemical change?
Rusting, molding, fermenting, change in odor, change in color (can be physical), burning, etc.
400
The electrons in the ________ energy level ALWAYS determine the chemical properties of an element?
Outermost energy level (valence electrons)
400
A(n) ________ bond has stronger attractions, therefore, more energy is needed to break the bond.
Ionic
400
What is the formula for Magnesium hydroxide?
Mg(OH)2
500
When molecules are heated, THIS happens and the molecules begin to move freely.
They Speed Up
500

What is caused by the mass movement of molecules in water and occurs more easily in liquids and gases than in solids?

Convection

500

During a flame test, how is the light created? (Hint: electrons move from which energy level to which energy level?)

Electrons move from high to low energy levels.

500
A(n) _________ bond is named using prefixes.
Covalent bond
500

Name a test that can be done to determine if something is an acid or a base.

pH test (paper), litmus test, pH indicator

M
e
n
u