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WorksheetsChemistry Revision
Total questions: 25
Worksheet time: 32mins
An electron is
positively charged
neutral
negatively charged
atomic number is
the number of proton
the number of electrons
the number of neutrons
the location of an atom on the periodic table
Atomic Mass is the number of
protons and neutrons in the nucleus of an atom
protons and electrons in the nucleus of an atom
neutrons and electrons in the nucleus of an atom
A molecule is
a singular particle of a particular element
another name for an element
2 or more atoms that are combined
Which change of state takes place during evaporation?
gas to liquid
liquid to gas
liquid to solid
solid to gas
In which process do particles move closer together but remain in motion?
condensation
diffusion
evaporation
freezing
An aluminium atom has a nucleon number of 27 and a proton number of 13. How many neutrons does this aluminium atom contain?
13
14
27
40
An atom of element Q contains 19 electrons, 19 protons and 20 neutrons. What is Q?
calcium
potassium
strontium
yttrium
Which statement about atoms is correct?
Atoms contain protons and electrons in the nucleus.
Neutrons are negatively charged.
Protons are positively charged.
The nucleon number is the number of neutrons.
What do the nuclei of 1H1 hydrogen atoms contain?
electrons and neutrons
electrons and protons
neutrons only
protons only
What is different for isotopes of the same element?
A nucleon number
B number of electron shells
C number of electrons in the outer shell
D proton number
An element Y has the proton number 18. The next element in the Periodic Table is an element Z. Which statement is correct?
Element Z has one more electron in its outer shell than element Y.
Element Z has one more electron shell than element Y.
Element Z is in the same group of the Periodic Table as element Y.
Element Z is in the same period of the Periodic Table as element Y.
Sodium chloride is an ionic solid. Which statement is not correct?
Ions are formed when atoms lose or gain electrons.
Ions in sodium chloride are strongly held together.
Ions with the same charge attract each other.
Sodium chloride solution can conduct electricity
Which change to an atom occurs when it forms a positive ion?
It gains electrons.
It gains protons.
It loses electrons.
It loses protons.
Which method is most suitable to obtain zinc carbonate from a suspension of zinc carbonate in water?
crystallisation
distillation
evaporation
filtration
A mixture of ethanol and methanol are separated by fractional distillation. This method of separation depends on a difference in property X of these two alcohols. What is property X?
boiling point
colour
melting point
solubility
A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring agents. One of these colouring agents is suspected of being illegal. Which method could be used to show the presence of this illegal colouring agent?
chromatography
distillation
evaporation
filtration
A student separates salt from a mixture of salt and sand. What is the correct order of steps for the student to take?
filter → evaporate → shake with water
filter → shake with water → evaporate
shake with water → evaporate → filter
shake with water → filter → evaporate
what is O2 + H2O?
element
compound
mixture
Which state of matter is the least common for the elements of the periodic table at room temperature?
solid
liquid
gas
The list shows the order of reactivity of some elements.
K, Na, Ca, Mg, Zn, Fe, (H)
Which statement about the reactivity of these metals is correct?
Copper reacts with steam to form hydrogen gas.
Magnesium is more reactive than calcium.
Potassium reacts with water to form hydrogen gas.
Sodium oxide is reduced by carbon to sodium.
Which substances do not react together?
A calcium + water
B copper + dilute hydrochloric acid
C sodium + water
D zinc + dilute hydrochloric acid
Q, R, S and T are four metals.
Q is found naturally as the metal.
R reacts with steam but not with cold water.
S reacts violently with cold water.
The oxide of T is reduced to T by heating with carbon.
What is the order of reactivity of the four metals, starting with the most reactive first?
Q → R → T → S
Q → T → R → S
S → R → Q → T
S → R → T → Q
A chemical engineer plans to produce hydrochloric acid. Which metal is best for the reaction container?
A copper
B iron
C magnesium
D zinc
State the conditions under which iron rusts.
