Question

6. Copper sulphate can be broken down into simpler substances by chemical method.

It is therefore ________ [ ]

A) A compound (B) An element (C) A mixture (D) An atom

7. Which one of the following four statements is incorrect? [ ]

A) Water is not an element

B) Iron contains only one type of atoms

C) All elements are solid at room temperature

D) The element mercury is a liquid at room temperature.

8. Which one of the following elements has the symbol Mn? [ ]

A) Magnesium (B) Manganese (C) Molybdenum (D) Neon

9. Which one of the following element is a non-metal? [ ]

A) Gold (B) Carbon (C) Iron (D) Zinc​

Answer 1

Answer:

6 compound

7all elements are solid at room temperature

8manganese

9 carbon

Answer 2

6.A
7.C
8.B
9.B
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