What does the atomic number of an element tell us

number of electrons and protons

A single displacement reaction is

One element replaces another in a compound

A combustion reaction is

Burning in oxygen, forms H2O and often CO2

metal and non-metal reacting together

A double displacement reaction is

Two elements switch places in two compounds

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Periodic Table- Test Revision

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Questions 16

Answers

1
What does the atomic number of an element tell us
neutron number
number of electrons and protons
weight of the atom
2
The reactivity of non-metals increases as the period decreases
False
True
3
What group is the most reactive on the periodic table?
Alkali Metals
Nobel Gases
Halogens
Alkali earth metals
4
A single displacement reaction is
Compounds are formed
Compounds break down
Two elements switch places in two compounds
One element replaces another in a compound
5
How many groups do we look at on the periodic table?
14
8
10
19
6
A synthesis/combination reaction is
One element replaces another in a compound
Compounds are formed
Two elements switch places in two compounds
Compounds break down
7
Which group would you find an element with valence electrons of 5
Group 4
Group 5
Group 1
Group 2
8
A combustion reaction is
Burning in oxygen, forms H2O and often CO2
Two elements switch places in two compounds
Compounds break down
Compounds are formed
9
The reactivity of metals increases as the period increases
True
False
10
Covalent bond is
2 non metals sharing electrons
metal and non-metal
2 metals
11
A decomposition reaction is
Two elements switch places in two compounds
Compounds break down
One element replaces another in a compound
Compounds are formed
12
An ionic bond is
metal and non-metal reacting together
two metals reacting together
two non-metals reacting together
13
The period tells us how many shells to draw for an atom
True
False
14
On the periodic table, the group tells us how many valence electrons there are for an element
True
False
15
A double displacement reaction is
Two elements switch places in two compounds
Compounds are formed
One element replaces another in a compound
Compounds break down
16
Valence electrons are
The maximum number of shells
Electrons on the last shell
Electrons on the first shell
The period

Periodic Table- Test Revision Flashcards | StudBud