Chemical and Physical Changes
Atomic Structure
Mixtures
Periodic Table
Elements
100
What are the 3 states of matter?
Solid, Liquid, and Gas
100
What type of charge to protons have?
A. Positive
B. Negative
C. Neutral
A. Positive
100
CO2 is an example of what?
A. Compound
B. Mixture
A. Compound
100
Columns of a periodic table are called _______.
Groups or Families
100
True or False- Elements can be broken down into smaller substances.
False
200
A __________ property is a characteristic that gives a substance the ability to undergo a change that results in a new substance.
A. Physical
B. Chemical
B. Chemical
200
What two subatomic particles make up an atom's nucleus?
A. Protons & Electrons
B. Electrons & Neutrons
C. Neutrons & Protons
C. Neutrons & Protons
200
A __________ mixture contains different substances but looks the same.
A. homogeneous
B. heterogeneous
A. homogeneous
200
Rows of a periodic table are called ___________.
Periods
200
What is the Atomic Number of this element?
88
300
List 3 examples of physical change.
Melting, boiling, evaporation, sublimation, freezing, change in mass, change in length, change in volume, dissolving
300
The Atomic Number is equal to ______ and _______
A. Protons and Neutrons
B. Protons and Electrons
C. Electrons and Neutrons
B. Protons and Electrons
300
This is an example of what type of mixture?
A. Homogeneous
B. Heterogeneous
B. Heterogeneous
300
Where are the metals found on a periodic table?
On the Left
300
Identify the Atomic Mass AND the Element Symbol
30.974 and P
400
Provide 4 different evidences of chemical changes.
Bubbles (gas production), change in temperature on its’ own, if it produces light/glows, smoke, produces sounds on its’ own, produces an odor, changes color on its own, fire, or burning
400
Most of an atom is made up of what?
Empty Space
400
This is an example of what type of mixture?
A. Homogeneous
B. Heterogeneous
A. Homogeneous
400
If elements are in the same group, elements at the top are ______ or reactive than those below them.
A. More
B. Less
A. More
400
List 3 characteristics of metals
Shiny
Good conductors of heat and electricity
Solid at room temperature
Malleable
Ductile
500
Combustion is an example of what type of change?
Chemical
500
Electrons travel around the nucleus in what area?
Electron Cloud
500
What does the subscript of a chemical formula tell you?
The amount of an element is found in the formula.
500
The __________ are the least reactive group on the period table.
Noble Gases
500
Name 5 Metalloids
Boron, Polonium, Arsenic, Tellurium, Germanium, Astatine, Silicon, Antimony