Quiz about Elements, Compounds, Chemical Formulas and Equations

Question 1

____ is a pure substance made of only one type of atom.

Accepted Answer

element

Answer

compound

Answer

molecule

Answer

neutron

Question 2

How are elements organized?

Accepted Answer

Periodic Table of Elements

Answer

In a chemical reaction

Answer

Alphabetically

Answer

By the number of neutrons

Question 3

Where do elements get their names?

Accepted Answer

Greek and Latin

Answer

Latin only

Answer

Greek and Hebrew

Answer

Latin and English

Question 4

Which element is written correctly?

Accepted Answer

Cu

Answer

CU

Answer

AU

Answer

C.U.

Question 5

True or false? Compounds are always found in their pure form.

Accepted Answer

false

Answer

true

Question 6

Is water an element or a compound?

Accepted Answer

Compound

Answer

Element

Question 7

A compound consists of two or more elements bound together.

Accepted Answer

True

Answer

False

Question 8

Is Iron (Fe) an element or a compound?

Accepted Answer

Element

Answer

Compound

Question 9

Is salt (NaCI) a compound or a element

Accepted Answer

Compound

Answer

element

Question 10

The force that holds atoms together is a -

Accepted Answer

chemical bond

Answer

strong force

Answer

reactive force

Answer

molecular reaction

Question 11

How many elements are in C₆H₁₂O₆?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 12

Which of the following is NOT an element?

Accepted Answer

H2O

Answer

H2

Answer

O2

Answer

Au

Question 13

How many atoms are there TOTAL in:
H₂SO₄

Accepted Answer

7

Answer

6

Answer

5

Answer

3

Question 14

Acetic acid is a compound found in vinegar. The chemical formula for acetic acid is C₂H₄O₂

How many different elements are in acetic acid?

Accepted Answer

3

Answer

5

Answer

6

Answer

8

Question 15

How many atoms are in one molecule of baking soda, NaHCO₃?

Accepted Answer

6

Answer

5

Answer

4

Answer

12

Question 16

NaOH + HCl --> NaCl + H₂O Identify the reactants in the chemical equation above.

Accepted Answer

NaOH and HCl

Answer

NaCl and H₂O

Answer

HCl and H₂O

Answer

HCl and NaCl

Question 17

Question 17.

Accepted Answer

2

Answer

4

Answer

6

Answer

8

Question 18

Is hammering wood together to build a house a chemical change?

Accepted Answer

no

Answer

yes

Question 19

When a chemical reaction is complete, you have new substances called the ______.

Accepted Answer

Products

Answer

Reactants

Answer

Things

Answer

Answers

Question 20

In an equation, an arrow reads as...

Accepted Answer

Yield

Answer

goes to

Answer

equals

Answer

minus

Question 21

How many Hydrogen atoms are in 4H₂O?

Accepted Answer

8

Answer

6

Answer

2

Answer

4

Question 22

How many Magnesium atoms are in 10MgCl₂?

Accepted Answer

10

Answer

5

Answer

20

Question 23

How many atoms of each element are in NaCl?

Accepted Answer

Na=1, Cl=1

Answer

Na=2. Cl=2

Answer

Na=1, Cl-2

Question 24

C₈H₁₀N₄O₂ has how many elements?

Accepted Answer

4

Answer

24

Answer

1

Question 25

How many total atoms are in this compound?
H₂C₃O₄N₅

Accepted Answer

14

Answer

5

Answer

15

Answer

19

Question 26

A subscript is the small number below the element symbol that tells the number of _______ of that element.

Accepted Answer

atoms

Answer

valence electrons

Answer

protons

Answer

elements

Question 27

The blue numbers in the image below represent ________

Accepted Answer

subscripts

Answer

reactants

Answer

coefficients

Answer

yield sign

Question 28

The red numbers in the image below represent ________

Accepted Answer

coefficients

Answer

reactants

Answer

subscripts

Answer

yield sign

Question 29

In order for a chemical equation to be balanced -

Accepted Answer

both sides of the equation need to be equal

Answer

the reactant side needs to have more atoms

Answer

the product side needs to have more atoms

Question 30

Acetic acid is a compound found in vinegar. The chemical formula for acetic acid is C₂H₄O₂.

How many hydrogen atoms are in acetic acid?

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Elements, Compounds, Chemical Formulas and Equations

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