Definitions
What is the basic building block of all matter?
Atom
Which element has only 1 proton?
Hydrogen (H)
What type of charge does a proton have?
Positive
How many protons are in this atom?
7
Compound
A substance from the periodic table that is made of only one type of atom.
Element
Which element has 11 protons?
What type of charge does an electron have?
Negative
How many electrons are in this atom?
11
What is the total number of atoms?
5
The region around the nucleus where electrons are likely to be found.
Electron Cloud
Which element has 38 protons?
Strontium (Sr)
Neutral
How many neutrons are in this atom?
35
What is the total number of molecules?
3
A chart that organizes all known elements by their atomic number and properties.
Periodic Table
Which element has 55 protons?
Caesium (Cs)
What 2 subatomic particles make up the nucleus?
Protons and Neutrons
What is the atomic number of this atom?
20
What is the total number of elements?
3
A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
Molecule
Which element has 88 protons?
Radium (Ra)
False
What is the atomic mass of this atom?
38
What is the number of atoms of each element?
Fe = 4
O = 6