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WorksheetsElements and compounds
Total questions: 20
Worksheet time: 10mins
Pure substances made up of one kind of atom are called:
elements
compounds
mixtures
solutions
The smallest neutral particle of an element is called:
an atom
a molecule
a compound
a formuls
Positively charged particles found in the nucleus of an atom are called:
neutrons
electrons
protons
shells
Negatively charged particles found in an atom are the:
protons
neutrons
nucleus
electrons
Particles with no electrical charges found in the center of an atom are the:
neutrons
electrons
nucleus
protons
A lithium atom has 3 protons, so it must have:
3 neutrons as well
3 electrons as well
no electrons
6 electrons as well
A sodium (Na) atom has 11 electrons. Its electron arrangement would be:
8, 2, 1
10, 1
2, 8, 1
2, 9
An atom with an electron arrangement of 2, 8, 1 will:
Lose 1 electron to form a positive ion
gain 1 electron to form a negative ion
gain 7 electrons to form a negative ion
lose 1 electron to form a negative ion
The atomic number of Chlorine (Cl) atom is 17. Its electron arrangement would be:
7, 8, 2
2, 8, 7
10, 7
7, 10
An atom with an electron arrangement of 2, 8, 7 would:
gain 1 electron to form a negative ion
lose 7 electrons to form a positive ion
gain 1 electron to form a positive ion
not lose or gain electrons.
How many atoms are there in a molecule of silver nitrate with the formula AgNO3?
3
4
5
2
What elements make up a compound with the formula CuCO3?
copper, carbon and oxygen
copper and cobalt
copper and carbon dioxide
copper and oxygen
Which one of the following elements is a metal?
Nitrogen
oxygen
chlorine
Zinc
Which one of the following elements is a gas?
Copper
Carbon
Nitrogen
sulfur
The correct name for a compound with the formula ZnCl2 is:
Zinc chloride
Zinc chlorine
Zinc oxide
Zinc sulfate
In this chemical equation:
Copper + oxygen → Copper oxide, What is the product?
Copper oxide
Copper
Oxygen
Copper and Oxygen
In the chemical equation below, what are the reactants?
Copper + oxygen → Copper oxide
Copper oxide
Copper
Oxygen
Copper and oxygen
The chemical used for testing CO2 gas is:
Limewater
Lime juice
Marble chips
Hydrochloric acid
When metals like Lithium reacts with water, it produces a gas called:
oxygen
nitrogen
helium
hydrogen
Atoms of all Group 1 elements like Li, Na and K have:
one electron in their outer shell
full set of electrons in their outer shell
no electrons in their outer shell
eight electrons in their outer shell.
