Matter
Principles of Matter
Atomic Theory
Periodic Table
Random Review
100
Which state of matter would be considered the most dense?
Solid
100
A change from one substance to another is what kind of change?
Physical or Chemical
Chemical
100
If phosphorus became an ion by gaining an electron, what would be it's charge?
-1
100
What are the vertical columns and the horizontal rows called on the periodic table?
Vertical = Groups
Horizontal = Periods
100
When an atom loses or gains an ___________, an ion is formed.
Electron
200
Identify the substance A in the picture:
compound, mixture, or element
Element
200
What state is occurring from D to E?
Boiling
200
Neutrons and _________ have almost the same mass.
Protons
200
How many electron rings are found in Chlorine (Cl)?
3
200
Moving left to right across a row of the periodic table, which of the following values increases by exactly one from one element to another?
Atomic Number
300
Cereal and Milk is an example of a ____________ mixture.
Heterogeneous
300
The heat of vaporization is the amount of energy required to change a substance from a ________ to a ________.
Liquid to a Gas
300
If an atom has 18 protons and 20 neutrons, which element is it?
Argon
300
The energy required to remove an electron.
Ionization Energy
300
How many valence electrons does Boron have?
3
400
The temperature at which a liquid reaches enough pressure to break away and become a gas is....
Boiling Point
400
Which arrow represents the buoyant force?
B
400
If an atom of tin has a mass number of 118, and an atomic number of 50, how many neutrons are in its nucleus?
68
400
The tendency of an element to attract electrons.
Electronegativity
400
The _____________ is the weighted average of an elements isotopes.
Atomic Mass
500
a Mixture where different materials remain distinct.
Heterogenous Mixture
500
measuring the resistance in the friction of "flow" is called what?
Viscosity
500
Which of the following is unique to each individual element?
Protons
500
What element on the periodic table has the smallest atomic radius?
Helium
500
Oxygen-18 and Oxygen-17 are considered what?
Isotopes