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WorksheetsQUIZ4. Ions and Isotopes (Hooke)
Total questions: 20
Worksheet time: 11mins
What charge does an atom have when it GAINS electrons?
Positive
Negative
Neutral
What is a representation of an ion?
Li
Na-22
O-2
What is the mass number of bromine?
35
45
80
79.904
How many neutrons does this bromine atom have?
35
45
80
What type of atom is this?
Neutral atom
Cation
Anion
Isotope
What type of atom is this?
Normal Atom
Cation
Anion
Isotope
How many electrons does this magnesium ion have?
24
12
10
14
What does it change in an ion?
The number of electrons
The number of protons
The number of neutrons
What is the representation of an isotope?
N-3
Al+3
Si
P-33
What happens to this atom?
It LOSES electrons
It GAINS electrons
It GAINS protons
It LOSES protons
An atom with the same number of protons and electrons (no charge) and the expected atomic mass or number of neutrons from the periodic table.
Neutral/Normal Atom
Ion
Isotope
A negatively charged ion that has gained electrons to satisfy the octet rule (metals do this)
Anion
Cation
Neutral Atom
Isotope
A positively charged ion that has lost electrons to satisfy the octet rule (non-metals do this)
Anion
Cation
Neutral Atom
Isotope
Atoms of the same element that have different mass than expected because they have a different number of neutrons.
Neutral Atom
Ion
Isotope
Cation
How many protons does this isotope of titanium have?
22
26
48
70
How many neutrons are in an atom of carbon-14?
6
8
10
14
How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
2
34
36
40
An element has three isotopes. Given the abundances and relative masses, calculate the average atomic mass and determine (from the periodic table) which element it is.
Abundances | Relative masses
0.005% | 234.04 amu
0.720% | 235.04 amu
99.275% | 238.05 amu
Uranium (#92, Atomic Mass: 238.03 amu)
Fluorine (#9, Atomic Mass: 19.00 amu)
Mercury (#89, Atomic Mass: 200.59 amu)
Polonium (#84 209 amu)
