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WorksheetsAtoms and elements
Total questions: 14
Worksheet time: 2mins
Which part of an atom contains a positive charge?
Nucleus
Neutron
Electron
Proton
The atomic number of Neon is
(a)
Which of the following pairs is correct
Fluorine,Fl,14
Beryllium,B,5
Lithium, Li,3
Oxygen,O,19
What is the symbol of Phosphorous
La
Po
P
Ph
Which of these elements don’t have an atomic number less than 5
Boron
Oxygen
Carbon
Lithium
Which element was discovered first
Boron
Oxygen
Phosphorus
Unknown
How many protons in Boron
4
8
5
9
Which of the following is a physical properties
Atomic number
Density
Conductivity
Melting point
Chemical properties are…
Properties of the chemical structure observed without changing the chemical structure
Properties of chemicals
Properties observed after changing the chemical structure of a substance
Properties observed after chemical change
The melting point is a chemical property
True
False
Both
Neither
Which element is this
Lithium
Helium
Boron
Calcium
Beryllium
Which of these is not physical property
None
Malleability
Ductility
Boiling point
Which element when lit on fire emits a red colour
Magnesium
Potassium
Lithium
Strontium
What is an alloy?
Moisture of 2 metallic substances
A combination of 2 metals or 1 metal and 1 non metal
Combination of 2 non metals
A combination of 2 metals only
