Test - Bonding

Question 1

3. What is an example of a molecule?

Answer 1

H20

pg. 22

Question 2

5. Why do molecular compounds not conduct electricity?

Answer 2

Do not break into ions

pg. 22

Question 3

6. Which pair of atoms will combine with each other and form an ionic bond?

Answer 3

Ca and Br

pg. 9

Question 4

7. Which of the following is the correct name for an compound between Phosphorus and Chlorine?

Answer 4

Phosphorus trichloride

pg. 24

Question 5

8. In the chemical formula for an ionic compound, which item is written first?

Answer 5

Positive ion

pg. 9

Question 6

9. What is the chemical name for the compound with the formula Na2S?

Answer 6

Sodium Sulfide

pg. 24

Question 7

12. Which element is most likely to gain electron a chemical reaction?

Answer 7

Br

pg. 5

Question 8

13. Which of the following is a similarity between ionic and covalent bonds?

Answer 8

Both make the elements more stable

pg. 9

Question 9

20. When do atoms become positive ions?

Answer 9

Losing electrons

pg. 3

Question 10

23. Which is a property shared by most molecular compounds?

Answer 10

Low melting point

pg. 23

Question 11

24. What are ionic compounds electrically?

Answer 11

Neutral

pg. 9

Question 12

25. What are electrons involved in the formation of chemical bonds called?

Answer 12

Valence Electrons

pg. 2

Question 13

26. What is an ionic bond attraction between?

Answer 13

Oppositely charged ions

pg. 9

Question 14

27. What is the reason why atoms of sodium and chlorine attract each other in a salt crystal?

Answer 14

Sodium hada positive charge and chlorine has a negative charge
pg. 23

Question 15

29. What rare ions that are made of more than one atom?

Answer 15

Polyatomic ions

pg.11

Question 16

30. What is a statement that best describes a covalent bond?

Answer 16

The attraction between opposite charges of ions in a compound.
pg. 22

Question 17

31. What are electrons involved in bonding between atoms?

Answer 17

Valence electrons

pg. 2

Question 18

32. How are Anions formed?

Answer 18

Giving electrons

pg. 9

Question 19

33. What is the chemical bond formed when two atoms shared electrons?

Answer 19

Electron bond

pg. 22

Question 20

35. When is a chemical bond formed when two atoms share electrons?

Answer 20

Covalent bond

pg. 22

Question 21

36. Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the “2” tell you?

Answer 21

There are two bromide ions for every magnesium ion.

pg. 4

Question 22

38. How many electrons are shared between the hydrogen atoms in a molecule of H2 gas?

Answer 22

2

pg. 8

Question 23

40. What are the properties of a compound to the properties of the elements that form it?

Answer 23

Different from

pg. 2

Question 24

42. What are electrons doing between two atoms that form a covalent bond?

Answer 24

Sharing

pg. 22

Question 25

43. When an atom gain an electron, what does it become?

Answer 25

Negative

pg. 3

Question 26

50. In a double covalent bond, how many electrons are shared between two atoms?

Answer 26

Four two pair

pg. 22

Question 27

52. What is the name fo Fe(CO3)2?

Answer 27

Iron (IV) Carbonate

pg. 13

Question 28

54. What is the name of Sr(CIO3)2?

Answer 28

Strontium chlorate

pg. 12

Question 29

58. What is the name of Be3P2?

Answer 29

Beryllium phosphide

pg. 12

Question 30

68. What type of bond is formed between two Oxygen atoms? Explain specifically what will happen to form the bond.

Answer 30

Covalent 2 oxygen atoms form a double bond by sharing 4 e- between them
pg. 22

Question 31

70. What type of bond is formed between Sodium and Chlorine? Explain specifically what will happen to form the bond.

Answer 31

An ionic bond is formed. Na gives its 1 valence e- to CI then Cl takes the electrons the electron and adds it to the 7 it already has to be stable
pg. 8

Question 32

71. Why do noble gases rarely form compounds?

Answer 32

They are already stable. Their outermost energy levels are full
pg. 2