Atom, Elements, and Compound Quiz

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Quiz Transcript

Atom, Elements, and Compound Quiz

Check your mastery on this topic right away! Only takes 5 minutes and you surely do great on your exam.

I'll take it!

Which of these is the smallest particle?

An atom

 

A molecule

 

A speck of dust

 

1 / 10

Which of these is the correct symbol for magnesium?

MG

 

mg

 

Mg

 

2 / 10

Which statement about atoms and molecule is correct?

Elements always exist as separate atoms

 

Elements always exist as pairs of atoms called molecules

 

Elements and compounds can exist as molecules

 

3 / 10

How many different atoms are there in a compound?

One

 

Always two

 

Two or more

 

4 / 10

Approximately, how many elements are there?

100

 

40

 

1,000,000

 

5 / 10

Which one is a compound?

Water

 

Hydrogen

 

Helium

 

6 / 10

Which of these contains two carbon atoms and six hydrogen atoms?

CH4

 

C2H6

 

C2H4

 

7 / 10

Which of these contains four hydrogen atoms?

CH3OH

 

H2O

 

H2O2

 

8 / 10

How many atoms are there in total in a molecule of sulfur trioxide, SO3?

Two

 

Three

 

Four

 

9 / 10

Why does air not have a definite formula?

It contains different amounts of water depending on where you are

 

It depends on the temperature

 

It is not a compound

 

10 / 10

It is okay.

Smile! It's not the end of the world. You can always try again. Nothing is impossible, right? Believe in yourself and retest. I'm 100% sure you can do it better than before.

NEVER ENOUGH!

Even the moon needs to be in the darkness to shine. You are so much capable than this. Let's try again.

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