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WorksheetsEdexcel Chemistry (9-1) CC3 and CC4
Total questions: 35
Worksheet time: 12mins
The scientist John Dalton lived over 200 years ago. John Dalton suggested an early model of atoms. When Dalton first described atoms he said that ...
(Select all that apply).
all elements are made of atoms
atoms are not formed of any smaller particles
all atoms of the same element are identical.
atoms are tiny hard spheres that cannot be broken down in smaller parts
The atomic number identifies the number of __________.
electrons
atoms
protons
neutrons
Subatomic particles that have a negative charge
electrons
protons
quarks
neutrons
The number 16 for the atomic element sulfur is the
ionic number
isotope
atomic mass
atomic number
How many protons does sulfur have?
32
16
48
12
Subatomic particle that has a positive charge
electron
poitron
neutron
proton
In what part of an atom can the protons and neutrons be found?
nucleus
neutrine
electron cloud
proton cloud
In Rutherford's gold foil experiment to determine the structure of an atom one observation was: Most of the alpha particles passed straight through. What is the explanation for this?
Nearly all the mass of at atom is found in the nucleus
An atom has electrons on shells
The nucleus is positive
An atom is mostly made up of empty space
What is an isotope?
A different element that has the same number of neutrons
The same element with a different mass as it has a different number of neutrons
The same element with a different mass as it has a different number of protons
A different element that has the same number of protons
What is the electronic configuration for the element in the picture?
2.8.6
1.8.7
2.8.7
3.6.8
Which statement is not part of John Dalton's atomic theory?
All matter is made up of tiny particles called atoms
Atoms cannot be created or destroyed
The atoms in an element are identical but each element has its own type of atom
Atoms can be broken down into smaller parts
No effect
repel each other
attract each other
Atoms of the same element with different numbers of neutrons
They have too many protons so lose them to become stable
They have a full outer shell so gain electrons to become stable
H2O
Metals and non-metals
non-metals only
6.1: Which element is inert
Nitrogen
Krypton (Kr)
Manganese (Mn)
Plutonium (Pu)
6.15: Which of these is not a property of noble gases?
Colourless
Odourless
Flammable
Gas at room temperature
6.1: Which of these is not a noble gas?
Helium
Argon
Nitrogen
Krypton
6.6: What colour is bromine?
orange-brown
orange-red
yellow-green
yellow
6.6: What state is fluorine at room temperature?
solid
liquid
gas
6.1: The Group 7 elements are all..
metals
non-metals
metalloids
6.1: What is another name for the elements in group 7?
The Halogens
The Noble gases
The Oxides
The Alkali Metals
6.3: What is formed when sodium reacts with water?
sodium oxide and hydrogen
sodium hydroxide and hydrogen
sodium hydroxide and oxygen
sodium hydroxide and carbon dioxide
6.1: Alkali metals are found in which group of the periodic table?
Group 1
Group 2
Group 7
group 8
The empirical formula for a compound is CH2 and its relative atomic mass (Ar) is 70. What is its molecular formula? Use the periodic table to help you.
CH2
C5H10
C70H140
A formula with the lowest whole number ratio of elements in a compound is called
Molecular Formula
Chemical Formula
Empirical Formula
Distance Formula
What is the best way to deal with our waste?
throw it in the bin
recycle it
reduce it
reuse it
