WorksheetsIons Review
Total questions: 25
Worksheet time: 20mins
What is an ion?
A charged atom
A large atom
A small atom
A cute atom
Which particles change the charge in atoms when ions are formed?
Protons
Neutrons
Electrons
Isotopes
Why are ions formed?
To make our lives difficult
Because atoms have the same number of protons and electrons.
Because atoms want 8 valence electrons.
Because atoms gained neutrons.
Cations are _________ and anions are __________.
negative/positive
positive/neutral
neutral/negative
positive/negative
An atom becomes _____________ when it loses electrons.
Positive
Negative
Neutral
Invisible
Ionic bonds form between two ions that have...
negative charges
positive charges
opposite charges
neutral charges
Cations are ____________ and anions are ____________.
metals, nonmetals
metalloids, nonmetals
nonmetals, metals
metalloids, metals
What is the charge of an atom that has lost one electron?
-1
+1
-2
+2
Elements on the LEFT side of the periodic table will most likely form: (tap picture to enlarge periodic table)
Positive ions
Negative ions
Neutral ions
None of these
Barium (Ba) atoms want to form...
an anion
a cation
an isotope
a chemical
A silicon (Si) atom wants...
Three more electrons
Four more or less electrons
Three less electrons
Two more electrons
Group 17 always has ions with a charge of...
+1
-1
+2
-2
How many electrons would a Calcium (Ca) ion gain/lose?
lose 1
lose 2
gain 1
gain 2
What charge will an Oxygen (O) ion have?
+1
+2
-1
-2
If an element has 3 valence electrons, what charge will likely form on its ion?
+3
-3
+5
-5
What is the ionic symbol for a Cesium atom?
Cs+
Cs+2
Cs-
Cs-2
What is the ionic symbol for a Gallium atom?
Ga-3
Ga-2
Ga+3
Ga+2
What is the ionic symbol for Selenium?
Se-2
Se-3
Se+2
Se+3
Which of the following has a -1 charge?
Aluminum (Al)
Calcium (Ca)
Bromine (Br)
Potassium (K)
Which of the following has a -3 charge?
Boron (B)
Fluorine (F)
Nitrogen (N)
Neon (Ne)
What is the correctly written chemical formula for the ionic compound, strontium oxide? [Hint: strontium, Sr is in Group 2]
Sr2O
SrO2
SrO
Sr2O2
What is the structure of a salt molecule called?
a blob
polar molecule
angular
crystal lattice
Salts...
forms a salt and water.
increase OH- ions.
increases H2O ions.
are formed from joining positive and negative ions.
Which of the following is incorrect?
The crystal lattice is broken down back into ions and surrounded by water molecules.
The dissolved salt makes the water more dense than fresh water.
Items float in the salt water because the salt make objects lighter/less dense.
Salt can be removed from water by heating the salt water solution until all liquid has evaporated.
Which of the following is NOT a property of salt
malleable
can easily dissolve in water
high boiling/melting point
very brittle
