Vocabulary
Elements
Atomic Numbers
Atoms & Periodic Table
Molecular Compounds
100
A substance that has mass and occupies space.
What is matter?
100
H
What is Hydrogen?
100
The atomic number of this element is 10.
What is neon (Ne)?
100
A subatomic particle, with a positive electric charge
What are protons?
100
H2O
What is water?
200
Matter that has the same composition and properties throughout.
What is substance?
200
Be
What is beryllium?
200
The atomic number of this element is 30.
What is zinc (Zn)?
200
A subatomic particle, symbol n or n0 , with no net electric charge.
What are neutrons?
200
O3
What is Ozone?
300
Any substance that cannot be broken down into simpler substances. Identified by its symbol and its atomic number.
What are elements?
300
Mn
What is manganese?
300
The atomic number of this element is 54.
What is xenon (Xe)?
300
A subatomic particle, with a negative electric charge.
What are electrons?
300
NH3
What is ammonia?
400
Is equal to the number of protons found in the nucleus
What is an atomic number?
400
Os
What is osmium?
400
The atomic number of this element is 74.
What is tungsten (W)?
400
Any of the gaseous elements helium, neon, argon, krypton, xenon, and radon.
What are noble gases?
400
SF6
What is sulfur hexafluoride?
500
Atoms of the same element with the same atomic number but with different number of neutrons.
What are isotopes?
500
Dy
What is dysprosium?
500
The atomic number of this element is 51.
What is antimony (Sb)?
500
Chemical elements of lithium, sodium, potassium, rubidium, cesium, and francium.
What are alkali metals?
500
CCL4
What is carbon tetrachloride?
M
e
n
u