Unit 2 Reading Comprehension Elements/Compounds

Test Description: Reading

Instructions: Answer all questions to get your test result.

1) A ______________ is a PURE SUBSTANCE that contains only one kind of atom.

2) Elements are arranged on the __________ _________ based on their properties.

3) Each element is represented by a one or two-letter abbreviation called a ____________ symbol

4) A __________ is a substance that is made when two or more elements combine.

5) A molecule of water contains two atoms of _________ and one atom of _______

6) Ca is the chemical symbol for which element?

7) The element that is represented by he chemical symbol Si

8) The chemical symbol for sodium is

9) The chemical symbol for iron is

10) The chemical formula for water is H2O, is H20 an element or compound


*select an answer for all questions

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