Science 8e: Atoms and Elements

An element contains
1. atoms of only one type
2. more than one type of atom chemically joined
3. several compounds in one place
4. more than one type of atom not chemically joined
A compound is
1. two or more different types of atoms chemically joined
2. two or more different types of atoms chemically joined
3. more than one type of atom not chemically joined
4. one type of atom bonded together in lumps
Atoms are
1. the smallest parts of any substance
2. the largest parts of any substance
3. the same colour
4. the same size
Elements can exist in three different states; which of these is not correct?
1. smoke
2. solid
3. liquid
4. gas
Sulphur Dioxide is
1. a compound
2. a mixture of elements
3. a mixture of compounds
4. an element
The first scientist to suggest the name element was
1. Robert Boyle
2. Louis Pasteur
3. Marie Curie
4. Galileo
A molecule is
1. two or more atoms or types of atoms chemically joined
2. atoms of only one type chemically joined
3. two or more elements not chemically joined
4. two or more elements chemically bonded together
Which is the correct symbol for Carbon?
1. C
2. Ca
3. Cn
4. Cb
Which is the correct symbol for Sodium?
1. Na
2. S
3. So
4. Ns
In a solid the particles are arranged
1. regularly and tightly packed, they are not free to move
2. irregularly and less tightly packed, they are free to move
3. irregularly and very spaced out, they are free to move
4. regularly spaced and freely moving
In a liquid the particles are arranged
1. irregularly and less tightly packed, they are free to move
2. regularly and tightly packed, they are not free to move
3. irregularly and very spaced out, they are free to move
4. regularly spaced and freely moving
In a gas the particles are arranged
1. irregularly and very spaced out, they are free to move
2. irregularly and less tightly packed, they are free to move
3. regularly and tightly packed, they are not free to move
4. regularly spaced and freely moving
Which of these properties do not apply to metals?
1. low melting point
2. conduct electricity well
3. conduct heat well
4. high density
Which of these properties do not apply to non-metals?
1. conduct electricity well
2. low density
3. low melting point
4. brittle
Which of these properties do not apply to metals?
1. do not conduct heat well
2. high melting point
3. ductile
4. malleable
Which of these properties do not generally apply to non-metals?
1. high density
2. low melting point
3. soft
4. brittle
Which of these is not one of the groups of the periodic table?
1. non-metals
2. transition metals
3. alkali metals
4. noble gases
Which of these is not used to decide where an element fits in the periodic table?
1. colour
2. atomic number
3. atomic mass
4. reactivity
If we heat magnesium in air it forms magnesium oxide, which weighs more than the magnesium we started with. This is because
1. it has reacted with the oxygen forming a compound
2. the particles of ash have lodged between the particles of the magnesium making it heavier
3. the magnesium particles get bigger when we heat them making them heavier
4. the particles of the air sit on the surface of the magnesium making them heavier
Which scientist came up with the modern form of the periodic table in 1869?
1. Dmitri Mendeleev
2. Charles Faraday
3. Sir Isaac Newton
4. Ptolemy
Gold is a precious metal used to make jewellery.
Which of these properties is not a property of Gold?
1. Reacts readily with water
2. Unreactive
3. Malleable
4. Conducts electricity very well
In the periodic table elements are given symbols. Which of the following is not one of the rules?
1. It sounds good
2. Use the first letter where possible
3. Where there is a clash use the first two letters
4. Where there are more than two clashes use the Latin version of the name and refer to the other two rules
Which of the following properties of iron is not a good reason to make ships out of it?
1. Reacts readily with water
2. Malleable
3. Strong
4. High melting point
What fraction of the elements are metals?
1. 3/4
2. 1/2
3. 1/4
4. 1/3
What fraction of the elements are non-metals?
1. 1/4
2. 2/3
3. 3/4
4. 1/6
Chemicals that react together are called
1. reactants
2. products
3. atoms
4. elements
The chemicals produced when substances react together are called
1. products
2. reactants
3. elements
4. metals
How many different kinds of atoms must there be in an element
1. 1
2. 2
3. 4
4. 16
Which statement is true?
1. the formula for a particular compound is always the same
2. the formula for a particular compound is never the same
3. the formula for a particular compound is sometimes the same but can be different
4. The formula for a particular compound is impossible to predict
How many atoms are there in one molecule of Carbon Dioxide?
1. 3
2. 4
3. 2
4. 6