Astatine is a very rare element found at thebottom of group 7. Astatine is likely to be:

a non-metal that reacts with metals.

Compared to sulfur dioxide, lithium oxide islikely to have…

a higher melting point and higher pH

Which of the following always happens during achemical reaction?

Atoms in the reactants are rearranged tomake the products.

Which list contains three typical properties ofnon-metals?

poor conductor of electricity, weak, low melting point

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8F - The Periodic table

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An end of topic test based on Exploring Science Scheme of work.

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Questions 15

Answers

1
Which twoelements in the periodic table below would have the most similar chemicalproperties?
1 and 6
2 and 3
1 and 4
2 and 6
2
According to Dalton’s theory, elements:
contain only one kind of atom.
are always solids.
can be split up into simpler substances.
contain at least two different kinds of atom.
3
Which of the following describes a group 1element?
a very unreactive metal
a very unreactive non-metal
a very reactive metal
a very reactive non-metal
4
The correct symbol for iron is
Ir
Fe
I
fe
5
In a chemical change you always get
a new substance being formed
a change in colour
heat given out
a change of state
6
Which of the following is a chemical change?
D
A
B
C
7
The elements were arranged in the periodic tablein order of increasing:
masses of atoms
density
melting point
reactivity
8
Astatine is a very rare element found at thebottom of group 7. Astatine is likely to be:
a metal that reacts with water.
a non-metal that reacts with metals.
a non-metal gas that is very unreactive.
a metal that does not react easily.
9
Which of these diagrams shows the particles in acompound?
A
B
C
D
10
Compared to sulfur dioxide, lithium oxide islikely to have…
a higher melting point and higher pH
a higher melting point and lower pH
a lower melting point and lower pH
a lower melting point and higher pH
11
Which of the following always happens during achemical reaction?
Atoms are broken down into smaller particles.
Atoms in the reactants are rearranged tomake the products.
Compoundsreact and split up into free atoms.
Elements join together to make new elements.
12
Which list contains three typical properties ofnon-metals?
poor conductor of electricity, weak, low melting point
poor conductor of heat, strong, high melting point
good conductor of heat, brittle, low melting point
good conductor of electricity, strong, high melting point
13
Where are most non-metals found in the periodictable?
D
C
A
B
14
Which of the following substances will be aliquid at 350 °C?
C
A
B
D
15
Which element is very unreactive?
hydrogen
helium
fluorine
lithium

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