Mrs' Key 8th Grade Science

1
Jeopardy

• Mrs. Key - 8th Grade Science
• Atomic Structure Theory - Formulas
• Template by Elaine Fitzgerald

2
Structure
Theory
Measurement
Formulas
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
3
What is an atom?
The smallest sample of an element.

• 1.100

4
What is the law of conservation of mass?
The idea that matter is neither gained nor lost
in a chemical reaction.

• 2.100

5
What is the atomic number?
The number of protons in the nucleus of the atom
and the way elements are arranged on the periodic
table.

• 3.100

6
What is a chemical symbol?
The abbreviation of an elements name.

• 4.100

7
What is an electron?
The subatomic particle that has a negative charge.

• 1.200

8
Who is J.J. Thomson?
This scientist is credited with the discovery of
the electron.

• 2.200

9
What are isotopes?
Elements with the same number of protons and
different numbers of neutrons.

• 3.200

10
What is a chemical formula?
The combination of numbers and chemical
symbols used as an abbreviation for a compound.

• 4.200

11
What is a proton?
The subatomic particle that has a positive charge.

• 1.300

12
Who is Ernest Rutherford?
This scientist is credited with discovering the
protons.

• 2.300

13
What is atomic mass?
The average of the masses of all the isotopes of
an element.

• 3.300

14
What is diatomic?
Molecules with two atoms of the same element.

• 4.300

15
What is a neutron?
The subatomic particle that has no charge.

• 1.400

16
What is the Bohr model?
In this model the electrons move in a fixed path
around the nucleus.

• 2.400

17
What is the mass number?
The sum of the protons and neutrons in the
nucleus of the atom.

• 3.400

18
What is a molecule?
A chemical combination of two or more atoms.

• 4.400

19
What is the nucleus?
The central portion of an atom that contains
the protons and the neutrons.

• 1.500

20
What is the electron cloud?
In this model the electrons are scattered in
an area around the nucleus.

• 2.500

21
What is an atomic mass unit or AMU?
The unit of measurement used to express the mass
of sub-atomic particles.

• 3.500

22
What is quantitative analysis?
Analysis used to determine the exact amount of
each element in a substance.

• 4.500