WorksheetsY9 Chapter 2. Properties of materials
Total questions: 61
Worksheet time: 50mins
Which phrase describes what happens to atoms in a chemical reaction?
never lost or gained, just rearranged
sometimes lost, never rearranged
sometimes lost, gained, or rearranged
lost or gained, never rearranged
Formula of aluminium ion
(a)
Which one is the correct formula for oxide ions?
O2+
O-
O2-
O3-
Identify the charge for Chlorine (Cl)
1-
1+
2-
2+
3-
Identify the charge for Oxygen (O).
1+
2+
2-
3-
3+
Identify the charge for Nitrogen (N).
1+
2+
3+
3-
2-
Identify the charge for Potassium (K).
1-
1+
2+
2-
In ionic bonding, valence electrons are _______.
shared
transferred
destroyed
In covalent bonding, valence electrons are ______.
shared
transferred
destroyed
Ionic bonds occur between
metal and metal
metal and nonmetal
nonmetal and nonmetal
Covalent bonds occur between
metal and metal
metal and nonmetal
nonmetal and nonmetal
C2O5
Carbon Dioxide
Dicarbon monoxide
Dicarbon Pentaoxide
This is an Ionic Bond
Why do elements combine into either Ionic or Covalent? (2 Answer choices)
To become more stable
They combine in order to to become a bigger (because bigger means stronger reactions)
To become a true molecule
To have a complete outer shell
Because they're attracted to each other
What are valence electrons?
Number of electrons nucleus
Number of protons and electrons
Number of protons electron cloud
Number of neutrons in the nucleus
Number of electrons in the outermost electron shell
LiF
Covalent
Ionic
NaCl
Covalent
Ionic
True or False: Ionic compounds do not have prefixes
True
False
Sometimes they do
True or False: Covalent compounds uses prefixes
True
False
1+
1-
2+
2-
If an atom has no charge, which of the following must be true?
It has more neutrons than protons or electrons.
There are only neutrons inside the atom.
Its number of protons is equal to its number of electrons.
The neutrons in the atom outnumber the electrons and protons.
How many valence electrons does Boron have?
1
2
3
4
A substance made of the combined atoms of two or more elements are called (a) are held together with chemical (b) . Bonds are a (c) that holds compounds together. When compounds are written we use a chemical (d) , which tells you which elements and how many of each are in the compound.
An Ionic Bond is which of the following
Loses or gains electrons
Shares electrons
Between metal & Non-metals
Forms multiple bonds
Forms between opposite charges
A covalent Bond is which of the following
Between non-metal & non-metal
Shares electrons
Between metal & Non-metals
Forms multiple bonds
Forms between opposite charges
Why do elements bond? (a)
If an atom gains a negative electron it becomes more
(a)
If carbon gained 4 electrons what would its charge be?
(type your answer as a number with a minus for negative - and a plus sign for positive +)
(a)
If an atom losses a negative electron it becomes more
(a)
Predict the bond that will form between Be and F.
(a)
Predict the bond that will form between H and Cl.
(a)
Which of the following atoms is most likely to bond with another atom?
Which substance contains bonds that involve a transfer of electrons from one atom to another? (a)
What are the columns referred to on the Periodic Table of Elements?
Groups
Periods
What are the rows referred to on the Periodic Table of Elements?
Groups
Periods
Atomic Mass (mass number) equals the combined number of
Protons and Electrons
Electrons and Neutrons
Protons and Neutrons
The number of valence electrons ________ by 1 as you move across the period.
increases
decreases
The chemical symbol for an element is always represented by only 1 letter
True
False
The first letter of the chemical symbol is always a capital letter and the second is always lowercase
True
False
The period number of an element corresponds to...
The number of electrons
The number of valence electrons
The number of energy levels / shells
The number of protons
The group number of an element corresponds to...
The number of electrons
The number of valence electrons
The number of energy levels
The number of protons
Elements in Group 6 of the periodic table would have how many valence electrons?
2
6
8
Unable to tell from the given information
Which element is located in Group 3, Period 2?
Magnesium
Lithium
Helium
Boron
Which element has a total of 4 energy levels, with only one valence electron in its fourth energy level?
Potassium
Rubidium
Carbon
Silicon
Which property of elements increases across a period of the Periodic Table?
metallic character
number of electron shells
number of valence electrons
tendency to form positive ions
The Group 8 elements are unreactive. The gas used to fill balloons is ...X... . The gas is unreactive because it has ....Y....electrons in its outermost electron shell. Which words correctly complete gaps X and Y?
A
B
C
D
The digram shows an outline of the Periodic Table.
Which of the elements U, V, W, X and Y would react together in the ration of 1:1?
U and X
U and Y
V and Y
W and X
Elements such as Silicon, diamond and graphite are ................................ mocledules.
simple covalent molecules
metallic
ionic
giant covalent
Sodium
Sodium Chloride
Graphite
The atoms are arranged in layers that are held together strongly
The atoms are arranged in layers that are held together weakly
Carbon is strongly bonded to 3 other carbon atoms.
Carbon is a metal that is weak.
Sodium
Carbon
Lithium
Silicon
Diamond
Graphite
Silicon dioxide
Sodium Chloride
Na1+ F1-
True or False: Sodium and Chloride ions have equal but opposite charges
True
False
Why does magnessium oxide has high melting and boiling point?
Since there are strong (a) . The (b) have strong forces holding them together in a (c) pattern. A lot of (d) is needed to overcome these forces and make the magnesium oxide melt or boil.
Why does ammonia has low melting and boiling points?
Forces between the molecules are (a)
(b) energy is needed to overcome these (c) forces and make the ammonia melt or boil.
The ions in sodium chloride make a giant structure known as a (a)
Atomic number equals to the number of ......................................
Protons
Neutrons
Protons and Neutrons
