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WorksheetsExploring Atoms & compound structure Quiz LG2
Total questions: 20
Worksheet time: 10mins
Which of the following best describes an atom?
The smallest unit of a compound that retains its properties
The smallest unit of an element that retains its properties
A mixture of two or more substances
A group of molecules bonded together
What is the chemical symbol for sodium?
S
So
Na
Sn
Which of the following is a compound?
O 2
H 2 O
Fe
Ne
What does a 3D molecular model of water (H 2 O) show?
Two hydrogen atoms and one oxygen atom joined together
Three oxygen atoms joined together
Two oxygen atoms and one hydrogen atom joined together
Three hydrogen atoms joined together
Which of the following is a mixture?
Pure gold
Carbon dioxide
Salt dissolved in water
Oxygen gas
Which part of an atom contains protons and neutrons?
Electron cloud
Nucleus
Shell
Orbit
What is the chemical formula for carbon dioxide?
CO
C 2 O
CO 2
C 2 O 2
Which of the following is NOT a correct symbol for an element?
H
Cl
He
Wt
What type of bond holds the atoms together in a molecule of water?
Ionic bond
Metallic bond
Covalent bond
Hydrogen bond
Which of the following best describes a compound?
A substance made of only one type of atom
A substance made of two or more elements chemically combined
A mixture of two or more substances
A group of the same molecules
Which element has the symbol 'Fe'?
Fluorine
Iron
Francium
Fermium
What does the periodic table organise elements by?
Their mass only
Their atomic number
Their melting point
Their colour
Which of the following is a solution?
Sand and water
Oil and water
Salt dissolved in water
Iron filings and sulphur
Which of the following is a correct chemical formula for a compound?
H 2
O 2
CO 2
N
What is the name of the element with the symbol 'K'?
Krypton
Potassium
Calcium
Phosphorus
Which of the following best describes a mixture?
A substance made of only one type of atom
A substance made of two or more elements chemically combined
A combination of two or more substances not chemically combined
A molecule with a covalent bond
Which of the following is a diatomic molecule?
H 2 O
CO 2
O 2
NaCl
What is the main difference between a compound and a mixture?
Compounds are physically combined, mixtures are chemically combined
Compounds are chemically combined, mixtures are physically combined
Both are chemically combined
Both are physically combined
Which of the following is represented by a 2D model showing different coloured circles joined together?
A mixture of elements
A compound
An atom
A solution
Which element is represented by the symbol 'C' on the periodic table?
Calcium
Carbon
Chlorine
Copper
