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Atoms
Elements
Periodic Table
Miscellaneous
Molecules
100
A particle in an atom with a positive charge.
What is proton?
100
The element C.
What is carbon?
100
This number tells you the number of protons in an atom's nucleus.
What is atomic number?
100
Anything that has mass and takes up space.
What is matter?
100

The chemical formula for water.

What is H20?

200
____________ are small particles that make up most types of matter on Earth.
What are atoms?
200
Isotopes of an element contain different numbers of ____________________.
What is neutrons?
200

Most elements found on the left side of the periodic table are __________.

What is metals or alkali metals?

200

The man who came up with the modern periodic table?

Who is Demitri Mendeleev 

200

Breaks or makes bonds between atoms.

What is chemical reaction?

300
Subatomic particles with a negative charge.
What is electrons?
300
Elements that have characteristics of both metals and nonmetals.
What is metalloids?
300

Elements on the right side of the periodic table.

What is nonmetals or noble gases?

300

Everything is made up of matter except? 

What is energy 

300

The number of atoms in a glucose (sugar) molecule C6H1206

What is 24 atoms? 

400
Ernest Rutherford's experiments showed that most of an atom is made up of _________ ___________.
What is empty space?
400
A property not associated with metals is ___________.
What is brittleness?
400
This number reflects the number of neutrons and protons in the nucleus of an atom.
What is mass number?
400

The elements that does not naturally occur on Earth.

What is synthetic?

400

The number of atoms in this compounds chemical formula   C8H10N4O2

What is 24 atoms?

500
A subatomic particle with a neutral charge.
What is neutron?
500
The chemical symbol for hydrogen is _________.
What is H?
500

Elements in the center of the periodic table.

What is metalloids or transition metals

500

The up and down columns in a periodic table. 

What is group or family?

500

The minimum number of atoms that a molecule can have.

What is 2?