Symbol – H
Atomic Number – 1
Combines with oxygen to form water

Symbol – He
Atomic number – 2
Was used to make the first gas lasers

Symbol – Li
Atomic number – 3
Used to make small batteries for cameras, calculators and pacemakers

Symbol – Be
Atomic number – 4
Found naturally in gems; gives emeralds their color

Symbol – B
Atomic number – 5
Used to make heat resistant glass like
Pyrex.

Symbol – C
Atomic number – 6
Makes diamonds

Symbol – N
Atomic number – 7
Makes up 78% of air.

Symbol – O
Atomic number – 8
Used as liquid rocket fuel.

Symbol – F
Atomic number – 9
Used in spray cans.

Symbol – Ne
Atomic number – 10
Used in lights because it glows orange or red

Symbol – Na
Atomic Number – 11
Sodium is used to transfer heat out of nuclear reactors.

Symbol – Mg
Atomic Number – 12
Magnesium is used in fireworks and flares because it gives off a bright white light when it burns.

Symbol – Al
Atomic Number – 13
Aluminum is used in airplane wings.

Symbol – Si
Atomic Number – 14
Silicon makes up flint, which Native
Americans used for tools and weapons.

Symbol – P
Atomic number - 15
Phosphorus is used to make things glow.

Symbol – S
Atomic Number – 16
Sulfur is used in gunpowder.

Symbol – Cl
Atomic Number – 17
Chlorine was used in World War I as a poison gas.

Symbol – Ar
Atomic Number – 18
Argon is the gas used to fill light bulbs and fluorescent bulbs.

Symbol – K
Atomic Number – 19
Potassium is used to make explosives.

Symbol – Ca
Atomic Number – 20
Calcium is a major component in marble.

1) PURE SUBSTANCE
Made from one type of atom or one type of molecule only

2) COMPOUND
Made of more than one type of atom bonded together; pure

3) MIXTURE
Two or more elements or compounds combined physically; not pure

4) IRON
Atomic Number – 26
Symbol – Fe
Iron is used to make magnets.

5) NICKEL
Atomic Number – 28
Symbol – Ni
Nickel only makes up 25% of a nickel.

6) COPPER
Atomic Number – 29
Symbol – Cu
Pennies are only coated in copper.

7) SILVER
Atomic number – 47
Symbol – Ag
Silver compounds are used to ‘seed’ clouds and make rain.

8) GOLD
Atomic number – 79
Symbol – Au
Gold, silver and copper are all in the same group, 11.

9) MERCURY
Atomic number – 80
Symbol – Hg
Mercury is the only metal that is a liquid at room temperature.

10) LEAD
Atomic number – 82
Symbol – Pb
Oxides of lead are used to make crystal.

1)
A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms.

2)
A chemical bond between two ions with opposite charges, characteristic of salts. Also called electrovalent bond .

3)
An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.

4)
Any of several forces, especially the ionic bond, covalent bond, and metallic bond, by which atoms or ions are bound in a molecule or crystal.

5)
a process that involves changes in the structure and energy content of atoms, molecules, or ions

6)
a representation of a substance using symbols for its elements parts

7)
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product

8)
A substance participating in a chemical reaction, especially a directly reacting substance present at the initiation of the reaction.

9)
A substance resulting from a chemical reaction.

10)
LAW OF CONSERVATION OF MASS a fundamental principle of physics that matter cannot be created or destroyed

1) ELEMENT
Pure substance that cannot be broken down into simpler substance by any ordinary chemical means

2) COMPOUND
A pure substance that forms when two or more elements join chemically

3) MIXTURE
A type of matter that forms when two or more substance combine without joining together chemically

4) HETEROGENEOUS MIXTURE
A combination of substances in which different components are easily observed

5) HOMOGENEOUS MIXTURE
A combination of substances in which the appearance and properties are the same throughout

6) COEFFICIENT
A number written before a chemical formula which shows how many molecules of a compound are present

7) SUBSCRIPT
A small number written to the right and slightly below a chemical symbol to tell the number of atoms of that element in the substance

8) PHYSICAL CHANGE
Altering the physical properties of a substance without changing the identity of the substance

9) CHEMICAL CHANGE
Occurs when a substance is changed into a new substance with different properties

10) ATOMIC MASS
The number of protons plus the number of neutrons in the nucleus of an atom

1) ENERGY
The ability to do work or cause changes to occur

2) WORK
Application of a force to an object to move it a certain distance in the direction of the force

3) MECHANICAL ENERGY
The energy associated with the motion of an object

4) THERMAL ENERGY
Total amount of energy in all of the particle contained in a sample of matter

5) HEAT
The transfer of thermal energy between two objects at different temperatures

6) CHEMICAL ENERGY
The energy that is stored in chemical bonds

7) ELECTRICAL ENERGY
The energy that results from the flow of moving charges

8) ELECTROMAGNETIC ENERGY
Energy resulting from the motion of the charged particles within atoms

9) SOUND ENERGY
Energy given off by a vibrating object

10) NUCLEAR ENERGY
The energy stored in the nucleus of an atom as a result of strong nuclear forces

1) KINETIC ENERGY
Energy resulting from the motion of an object

2) POTENTIAL ENERGY
Stored energy

3) LAW OF CONSERVATION OF ENERGY
States that while energy may be changed from one form to another, energy is neither created nor destroyed

4) FRICTION
A force that opposes the motion of an object

5) SCIENTIFIC QUESTION
A precise question that can be answered through observation, measurement, testing or analysis

6) SCIENTIFIC METHOD
A series of organized steps that guide the investigative process

7) HYPOTHESIS
A possible answer to a scientific question

8) EXPERIMENT
A procedure designed to test a hypothesis

9) VARIABLE
Any factor that can affect the results of an experiment

10) CONTROL GROUP
Experimental setup that represents the norm and shows what would happen in the absence of any changes regarding the independent variable.