Elements, compounds and mixtures

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Which of the options below is the correct definition of an element?

• Elements have only two types of atom

• Elements have only two types of atom bonded together

• Elements have only one type of atom

• Elements have two types of atom not bonded together

Which of the following example are elements

• Lithium

• Carbon Dioxide

• Helium

• Sodium Chloride

Which diagrams A, B, C or D represent elements?

• A

• B

• C

• D

Which of the options below is the correct definition of an compound?

• One type of atom on its own

• Atoms that have bonded between them

• Two or more types of atom chemically bonded

• Two or more types of atom not chemically bonded

Which diagram A, B, C or D represents a compound?

• A

• B

• C

• D

Which of the following examples are compounds?

• Carbon dioxide

• Helium

• Magnesium oxide

• Magnesium

Which of the following definitions is correct for a mixture?

• One type of atoms only

• Atoms that are not bonded

• Two or more atoms or compounds that are not chemically bonded

• Two types of atom that are chemically bonded

Which diagram A, B, C or D represents a mixture?

• A

• B

• C

• D

The diagram shows a compound because...