Properties of Matter
Periodic Table
Atomic Theory
Classification of Matter
Electrons
100
An element that conducts heat and electricity well.
What is a metal?
100
Most electronegative element.
What is fluorine?
100
Atomic model where the protons and neutrons are located in the nucleus. Electrons revolve around the nucleus in fixed orbits (energy levels).
What is Bohr Model?
100
The smallest unit of a pure substance that still has the properties of that substance.
What is an atom?
100
Name of the three-dimensional region around a nucleus where an electron may be found.
What is an orbital?
200
The amount of matter in an object.
What is mass?
200
Element with an atomic mass of 72 and an atomic number of 32?
What is germanium?
200
Discovered that atoms have a dense nucleus with positive charge.
Who is Rutherford?
200
A pure substance that is made of only one kind of atom.
What is an element?
200
Principle that states that atoms tend to form compounds so that each atom can have eight electrons in its outermost energy level.
What is the octet rule?
300
Matter exists in these 3 states.
What are solid, liquid and gas?
300
Identifies the element.
What is the number of protons?
300
Atom where the number of protons equal the number of electrons.
What is a neutral atom?
300
The substance formed from the atoms of two or more elements.
What is a compound?
300
Element with this electronic configuration: 1s2 2s2 2p6 3s2 3p6 4s1.
What is potassium (K)?
400
Two different ways that matter can change.
What is a physical or chemical change?
400
Iron (Fe) belongs to this group.
What is transition metals?
400
Electrons are attracted to these subatomic particles.
What are protons?
400
Substance that cannot be broken down by a chemical change.
What is an element?
400
Notation used to represent the number of valence electrons of an atom as dots drawn around the element's symbol.
What is Lewis Dot structure (diagram)?
500
Radius, volume, mass and length.
What are examples of extensive properties?
500
Increases down a group and towards the left side of the periodic table.
What is atomic radius?
500
Created the gold foil experiment.
Who is Rutherford?
500
Salt water is an example of this type of mixture.
What is homogeneous mixture?
500
Energy level that can hold only two electrons.
What is the first energy level?
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