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Elements
Periodic Table
Counting Atoms
What am I?
100
The study of matter and its changes
What is chemistry?
100
An element with 6 electrons
What is carbon?
100
The number of periods in the periodic table
What is 7
100
The number of hydrogen atoms in H2O?
What is 2?
100
The diagram we sketched for this just shows 1 circle.
What is an atom?
200
Mass divided by volume
What is density?
200
The element symbol for sodium
What is Na?
200
The number of groups in the periodic table
What is 18
200
The number of oxygen atoms in H2O
What is 1?
200
Substances made up of two or more different kinds of elements
What is a compound?
300
The center of an atom.
What is the nucleus?
300
The lightest element.
What is hydrogen?
300
Most elements on the periodic table are this type
What is a metal
300
The number in a chemical formula
What is a subscript?
300
Substances that can be separated back to its original components.
What is a mixture?
400
The location of the proton
What is inside the nucleus?
400
A noble gas in period 2.
What is neon?
400
The period number tells you this about an atom of that element.
What is the number of energy levels? (circles or rings)
400
The number of atoms if there is no subscript
What is 1?
400
Name a molecule that is not a compound
Example: Oxygen (O2)
500
The unit that mass is measured in
What is grams?
500
This element causes iron to rust
What is oxygen?
500
He is responsible for organizing the periodic table
Who is Dmitri Mendeleev?
500
The number of carbon atoms in CaCl2
What is 0?
500
A mixture where you can see the different parts
What is a heterogeneous mixture?