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Quiz on Atoms and Compounds

Authored by Saleh Mahdy

English

6th - 8th Grade

Used 8+ times

Quiz on Atoms and Compounds
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the smallest unit of an element that has its chemical identity?

Molecule

Atom

Compound

Proton

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an element?

A substance made of two or more different atoms

A substance that contains only one type of atom

A mixture of atoms and molecules

A compound

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT an element?

Oxygen

Hydrogen

Water

Gold

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a compound?

Iron (Fe)

Oxygen (O₂)

Water (H₂O)

Gold (Au)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement is true about compounds?

Compounds can be separated into elements by physical means.

Compounds contain atoms of only one element.

Compounds can be broken down into simpler substances by chemical changes.

Compounds do not have a fixed composition.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements is true for elements?

They are made of only one type of atom.

They can be broken down into simpler substances by chemical changes.

They are made of more than one type of atom.

They are represented by chemical formulas.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total number of elements discovered so far?

92

100

108

118

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