Matter
Atomic Theory
Elements
Periodic Table
Bohr Model and Compounds
100
This is what it is called when a solid changes to a gas.
What is sublimation?
100
This subatomic part of the atom has the least amount of mass, but takes up the most space.
What are electrons?
100
These are hard, shiny, malleable, ductile, and good conductors of heat and electricity.
What are metals?
100
These are the 5 things included on an element square on the periodic table.
What is the atomic number, name, symbol, ion charge, and atomic mass?
100
These types of compounds share electrons to form molecules. An example is carbon dioxide.
What are covalent compounds?
200
This is the kind of change that happens when a change in matter results in new substances being formed
What is a chemical change?
200
The number of protons in an atom is also called this.
What is the atomic number?
200
These are usually gasses, and are brittle solids at room temperature
What are non-metals?
200
This category on the periodic table has characteristics of both metals and nonmetals.
What are metalloids?
200
These types of compounds gain or lose electrons to form ions. An example is sodium chloride (table salt).
What are ionic compounds?
300
This is the theory that explains what happens to matter when the energy of the particles changes.
What is kinetic molecular theory?
300
This scientist discovered the nucleus.
Who is Rutherford?
300
This atom makes up over 90% of the atoms in the universe.
What is hydrogen?
300
This is what the horizontal rows on the periodic table are called.
What are periods?
300
This is how many valence electrons are in a molecule of aluminum.
What is 1?
400
This is the state of matter when molecules have the most kinetic energy.
What is gaseous state?
400
This scientist spent most of his time studying the electrons surrounding the nucleus.
Who is Bohr?
400
This is the only metal to exist as a liquid at room temperature.
What is mercury?
400
This is what Group 1 (Family 1) is called on the periodic table. They are HIGHLY reactive.
What are alkali metals?
400
This is how many valence electrons are in a molecule of fluorine.
What is 7?
500
These are the two types of properties we can investigate when explaining matter.
What is qualitative and quantitative?
500
An atom with an equal number of protons and electrons is called this.
What is a neutral atom?
500
Each element is made up of how many different kinds of atoms?
What is only ONE kind of atom?
500
This group or family is the MOST stable and unreactive elements on the periodic table.
What are noble gasses?
500
This is how many valence electrons are in Mg2+
What is 8?
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