Flashcard Set - Edit | Knowt Bonding and Chemical Formulas

Mr. Joyce Quiz

Please read each question carefully and select the best answer.

The last question will be extra credit. Try it! It can’t hurt. Good luck!

1) Which part of an atom forms bonds?

Nucleus

Electron

2) What kind of bond forms when cations (metals) and anions (nonmetals) join together?

Ionic

Covalent

3) Take a look at the molecule below:

The bonds between the nonmetal hydrogen and nonmetal carbon atoms are what type of bond?

Ionic

Covalent

4) Which of the following properties (look, feel, etc..) is a property of a metal?

Metals break easily

Metals conduct electricity well

5) Think about the following image of Copper (Cu) atoms and the “sea of electrons”:

What kind of bond occurs in this scenario?

Ionic

Metallic

6) Consider the following chemical formula: 3CuF2

In this situation, what is the word that describes the number “3”?

Subscript

Coefficient

7) Consider the following molecule: 2AlCl3

In this situation what is the word that describes the number “3”?

Subscript

Coefficient

For Questions 8-12, Consider the following chemical equation for balancing:

___ CH4 + ___O2 → ___ CO2 + ___H2O

8) Is this equation balanced already?

Yes

No

9) What should the coefficient be in front of the CH4 molecule?

1

2

10) What should the coefficient be in front of the O2 molecule?

1

2

11) What should the coefficient be in front of the CO2 molecule?

1

2

12) What should the coefficient be in front of the H2O molecule

1

2

For Questions 13 and 14, think about the following Lewis Dot Structures:

13) Why is the compound “Sodium Chloride” stable, or happy when bonded together?

Sodium loses one electron and chlorine gains one electron

Sodium gains seven electrons and chlorine loses seven electrons

14) How many bonds would form between Sodium (Na) and Chlorine (Cl)?

1

2

15) What makes a “compound” different from a “molecule?”

Compounds happen when only the same type of atoms (like H2) are bonded together

Compounds must be at least two different types of atoms (like NaCl)

16) What does the “Law of Conservation of Matter” tell us?

Humans should conserve as much matter as possible (a.k.a. recycling)

Matter cannot be created or destroyed, so the number of atoms and types of atoms on both sides of chemical equations must be the same.

17) Consider the Lewis Dot Structure for Carbon, Oxygen, and Carbon Dioxide (CO2)

How many bonds would form between Carbon and each of the two Oxygens? Hint: Think about how many pairs of electrons are being shared between each Carbon and Oxygen

1 (Single bond)

2 (Double Bond)