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8F Periodic Table Flashcards | StudBud
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8F Periodic Table
8F Periodic Table
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#ks3 #science
Flashcards
20 cards
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Questions
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Answers
1
Which of the following substances will be a liquid at 350 °C?
B
D
C
A
2
Which of the following is a chemical change?
A
B
D
C
3
Which of the following could have the formula XY2?
B
A
D
C
4
The elements were arranged in the periodic table in order of increasing:
reactivity.
masses of atoms
melting point.
density.
5
Which of the following always happens during a chemical reaction?
The atoms in the reactants are rearranged to make products.
Compounds react and split up into free atoms.
Elements join together to make new elements.
Atoms are broken down into smaller particles.
6
Which of these diagrams shows the particles in a compound?
B
C
D
A
7
Which element is very unreactive?
fluorine
helium
lithium
hydrogen
8
Astatine is a very rare element found at the bottom of group 7. Astatine is likely to be:
a metal that does not react easily.
a non-metal that reacts with metals.
a non-metal gas that is very unreactive.
a metal that reacts with water.
9
When magnesium is heated and reacts with oxygen gas…
it glows red and forms magnesium oxide gas.
it glows red and forms solid white magnesium oxide.
it burns brightly and forms magnesium oxide gas.
it burns brightly and forms solid white magnesium oxide.
10
The difference between chemical and physical change is that in chemical change you always get
a change in colour.
heat given out.
a change of state.
a new substance being formed.
11
Compared to sulfur dioxide, lithium oxide is likely to have…
a higher melting point and higher pH.
a higher melting point and lower pH.
a lower melting point and higher pH.
a lower melting point and lower pH.
12
This data shows that the density of group 0 elements:
decreases down the group.
does not change down the group.
increases down the group.
shows no pattern within the group.
13
Magnesium reacting with steam to produce magnesium oxide and hydrogen gas Equation:Magnesium +
water -> magnesium + hydrogen
magnesium oxide -> hydrogen + water
water -> magnesium oxide + hydrogen
hydrogen -> magnesium + water
14
The correct symbol for iron is
Ir
Fe
fe
I
15
In which of the following pairs is the second element more reactive than the first element?
sodium and potassium
chlorine and bromine
fluorine and chlorine
sodium and lithium
16
Which of the following describes a group 1 element?
a very unreactive metal
a very reactive metal
a very unreactive non-metal
a very reactive non-metal
17
Where are most non-metals found in the periodic table?
A
D
C
B
18
According to Dalton’s theory, elements:
contain only one kind of atom.
can be split up into simpler substances.
are always solids.
contain at least two different kinds of atom.
19
Which two elements in the periodic table below would have the most similar chemical properties?
1 & 4
1 & 6
5 & 6
2 & 3
20
Which list contains three typical properties of non-metals?
poor conductor of electricity, weak, low melting point
good conductor of heat, brittle, low melting point
good conductor of electricity, strong, high melting point
poor conductor of heat, strong, high melting point
