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WorksheetsAtoms, Ions & Isotopes Pre-Assessment
Total questions: 15
Worksheet time: 8mins
The center of an atom is the
Nucleus
Proton
Neutron
Electron
The part of the atom that has a positive charge is the
Molecule
Neutron
Proton
Electron
The neutron has _______ charge.
Positive
Negative
No charge
Alternates between positive and negative
Negatively charged particles that move around outside the nucleus are the ......
Elements
Compounds
Electrons
Protons
To change Li (lithium) to Li+ (lithium ion), you need to:
Add one electron
Remove an electron
Remove one proton
Add one neutron
Fe2+ and Fe3+ are different iron _______
Ions
Isotopes
Elements
Atoms
146C and 126C are examples of carbon:
Ions
Neutrons
Isotopes
Molecules
146C has how many protons?
6
8
14
20
146C has how many neutrons?
6
8
14
20
Li+ and Cu2+ are examples of ions called:
Anions
Cations
Istopes
Molecules
What is the symbol for an ion which has 8 protons and 10 electrons?
N3-
O2-
O3-
F-
What is the nuclear symbol for the isotope of oxygen which has 9 neutrons?
168O
178O
188O
189O
How many protons, neutrons, and electrons does neutral Beryllium-7 Have
4,3,2
4,3,4
4,3,6
4,6,3
N3- has:
7 protons and 4 electrons
7 protons and 10 electrons
7 protons and 11 electrons
8 protons and 11 electrons
Which subatomic particles make up the nucleus?
Proton and electron
Proton and neutron
Electron and neutron
Electron, proton and neutron
