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Atoms
Elements
Periodic Table
Chemical Equations
Calculating P, N, E
100
Most of the mass of an atom is here.
What is the nucleus?
100
Has atomic number 2.
What is helium?
100
Elements with full valence shells are in this group.
What are noble gases (group 18)?
100
The small numbers that appear after an element and indicate number of atoms.
What are subscripts?
100

How many protons, neutrons and elections does the element iron have?

26 protons, 30 neutrons, and 26 electrons

200
Positively charged particle in an atom.
What is a proton?
200

Name an element that is a nobel gas.

 Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn)

200
Name for elements in Group 1.
What are alkali metals?
200
Numbers put in front of elements or compounds in order to balance equations.
What are coefficients?
200

How many protons, neutrons and elections does the element gold have?

79 protons, 79 elections, 118 neutrons

300
Protons and Neutrons.
What are particles found in the nucleus of an atom?
300
The only nonmetal on the left side of the periodic table.
What is hydrogen?
300
Classification that indicates number of energy levels.
What are periods?
300
Substances that appear to the left of the arrow.
What are reactants?
300

How many protons, neutrons and electrons does the element potassium have?

19 protons, 19 electrons, 20 neutrons

400
Negatively charged particles found in atoms.
What are electrons?
400
The four primary elements in living things.
What are carbon, hydrogen, oxygen, and nitrogen?
400
Word that indicates repeating patterns.
What is periodic?
400
Mass of reactants is equal to the mass of the products.
What is the law of conservation of mass?
400

How many protons, neutrons and electrons does the element sodium have?

11 protons, 11 electrons, 12 neutrons

500
An atom that has either lost or gained an electron.
What is an ion?
500
Elements with varying numbers of neutrons.
What are isotopes?
500
Have characteristic of both metals and nonmetals.
What are metalloids?
500
Substances that appear to the right of the arrow.
What are products?
500

Determines the number of protons and electrons

The atomic number