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WorksheetsAtoms, Electrons & Molecules Review
Total questions: 20
Worksheet time: 16mins
The positive particles of an atom are ___________.
electrons
protons
neutrons
The center of an atom where its neutrons and protons are is called the _____________.
nucleus
electron cloud
center
Which part of an atom has no charge?
Proton
Neutron
Electron
None of them
An atom with atomic number 6 would have how many protons?
6
12
3
What is the atomic number for an element with three protons?
6
1
3
A substance formed by two or more different elements defines a/an
Isotope
Ion
Compound
Elements
Atoms share pairs of Electrons in what kind of bond
Covalent
Ionic
Electrical
Cohesive
The electrons in the outermost energy level of an atom that influence how an element will react with other substances.
Electron Orbital
Valence Electrons
Electrostatic Forces
Atoms are most stable when their outer shell is full or complete.
True
False
An atom with 1 valence electron 'needs' a full shell, so it can either gain 7 electrons or lose 1. Which is more likely to occur?
lose 1 electron
gain 7 electrons
This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?
3
4
5
How many electrons can the first shell hold?
2
4
6
8
According to the diagram below, how many bonds will this atom be able to make?
How many valence electrons does carbon have?
4
5
6
7
The second shell from the center of an atom can hold how many electrons?
2
6
8
18
