Ch19 (Glencoe) - Balancing Chemical Equations Flashcards Preview

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Flashcards in Ch19 (Glencoe) - Balancing Chemical Equations Deck (31)
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1

How many carbon atoms are represented below?

CH4

1

This is a molecule of methane.  The carbon atom is the black atom in the center.  The other 4 atoms are hydrogen atoms.

CH4

2

How many oxygen atoms are represented below?

2O2

4

(Count the 4 red atoms in the two oxygen molecules)

3

How many carbon atoms are represented below?

CO2

1

CO2 is called carbon dioxide. It has one carbon atom. 

(Carbon is the black atom in the middle)

4

How many water molecules are represented below?

2H2O

2

"2H2O" means 2 water molecules

 

5

How many atoms, total, are represented below?

CH  +  2O2

9

(There are 9 atoms total.  Count 'em)

6

How would you represent the molecule below in a chemical equation?

CH4

7

How would you represent what is below in a chemical equation?

"Two Molecules of Oxygen"

2O2

8

Look at the chemical equation below.  How many molecules of methane (CH4) are shown?

 

CH4 + 2O2 → CO2 + 2H2O

1

9

How would you represent what is below in a chemical equation?

"Two molecules of water"

2H2O

10

How would you represent what is below in a chemical equation?

CO2

11

How would you represent what is below in a chemical equation?

CO2 + 2H2O

12

How would you represent what is below in a chemical equation?

CH4 + 202

13

What is the chemical formula for this compound?

 

Fe2O3

14

What is the chemical formula for this?

3Fe2O3

 

(3 molecules of Iron Oxide)

15

What is the chemical formula for this?

4Na

(Four individual atoms of Sodium)

16

What is the chemical formula for this?

ZnCl2

 

(One molecule of zinc chloride)

17

What is the chemical formula for this?

4ZnCl2

(Four molecules of zinc chloride)

18

What is the chemical formula for this?

NaCl

19

What is the chemical formula for this?

3NaCl

20

What is the chemical formula for this?

Cl2

(One molecule of chlorine)

21

What is the chemical formula for this?

5Cl2

(5 molecules of chlorine)

22

What is the chemical formula for this?

Zn(OH)2

(One molecule of zinc hydroxide)

 

23

What is the chemical formula for this?

3Zn(OH)2

(3 molecules of zinc hydroxide)

24

What is the chemical formula for this?

CaBr2

(one molecule of calcium bromide)

25

What is the chemical formula for this?

3CaBr2

(3 molecules of calcium bromide)

26

What is the chemical formula for this?

H20

(One molecule of water)

27

What is the chemical formula for this?

6H20

(6 molecules of water)

28

You will see this little guy often.  What is he?

Hydroxide

(Oxygen and Hydrogen pair up like this so often, we sometimes just treat them like a single object.)

29

What is the chemical formula for this?

3OH

30

What is the chemical formula for this?

Al(OH)3

(one molecule of aluminum hydroxide)