Where are electrons found on atoms?

They are found in the shells of atoms

What is a chemical formula?

They tell you the number of each element in a chemical

How should chemical elements correctly be written?

First letter capital, second letter lowercase

An alloy is a mixture of elements one of which is a metal

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Atoms, Elements, Compounds and Mixtures

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A #ks3 #revision quiz focusing on #Atoms, #Elements, #Compounds and #Mixtures.

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Questions 20

Answers

1
Which four elements did Plato believed made up everything?
Neutrons, protons, electrons and shells
Petrol, gas, oil and coal
Earth, air, fire, water
Plastic, glass, wood and fabric
2
Which method of separating mixtures is shown in the diagram?
Pipetting
Evaporation
Filtration
Distillation
3
What is a compound?
Two or more chemical elements in a mixture, not bonded
Two atoms of the same element bonded together
Two or more chemical elements bonded together
4
Which method of separating mixtures is shown in the diagram?
Distillation
Evaporation
Filtration
Pipetting
5
What is the correct formula for water?
H2O
HO2
H2O
2HO
6
Balance the equation in the picture
H2O → 2H2 + 2O2
H2O → 2H2 + O2
2H2O → H2 + 2O2
2H2O → 2H2 + O2
7
Atoms are...
Made from elements
The smallest things that can exist by themselves
Solid spheres
Can be seen under a microscope
8
What is a mixture?
Two or more substances mixed together but not bonded
Two or more substances mixed together and bonded
9
Where are electrons found on atoms?
They are found in the shells of atoms
Atoms don't have electrons
In the nucleus
10
A compound contains one calcium, one carbon and three oxygen elements - what is it called?
Calcium carbonate
Calcium carbonide
Carbon calcitate
Calcium carbidate
11
What is a chemical formula?
They tell you the answers to chemistry questions
Something you fill in before a practical
They tell you the number of each element in a chemical
12
Where is the nucleus of an atom?
Atoms don't have a nucleus
They go around the outside
It is found in the middle
13
How should chemical elements correctly be written?
First letter capital, second letter lowercase
All capital letters
All lower case
First letter lowercase, second letter capital
14
Why are alloys useful?
They have better properties
They help save resources
They are cheaper
They never rust/corrode
15
A compound contains one magnesium atom and two chlorine atoms - what is it called?
Chlorine magnesate
Magnesium chloride
Magnesium chloratide
Magnesium chlorate
16
A nucleus contains...
Electrons and protons
Protons and neutrons
Just neutrons
Just protons
17
What is the correct formula for carbon dioxide?
C2O2
CO2
C2O
CO2
18
Balance the equation in the picture
N2 + H2 → 2NH3
2N2 + H2 → 2NH3
2N2 + 2H2 → NH3
N2 + 3H2 → 2NH3
19
What is an alloy?
A mixture of elements
An alloy is a mixture of elements one of which is a metal
The people on your side during a war
A shiny object
20
The periodic table was invented by...
Dmitri Shostakovich
Dmitri Payet
Dmitri Kondatyev
Dmitri Mendeleev

Atoms, Elements, Compounds and Mixtures Flashcards | StudBud