Test - Bonding

Question 1

1. If atoms of a halogen nonmetal (group 17) gain one electron, the atoms then have

Answer 1

8 valence electrons NB pg. 10

Question 2

3. Which of the following is an example of a molecule?

Answer 2

H2O NB pg. 7

Question 3

4. How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable

Answer 3

8 NB pg. 5

Question 4

7. Which of the following is the correct name for a compound between phosphorus and chlorine

Answer 4

Phosphorus trichloride NB pg. 12

Question 5

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

Answer 5

Positive ion NB pg. 10

Question 6

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

Answer 6

Sodium sulfide NB pg, 12

Question 7

15. Which of the following is a characteristic property of ionic compounds

Answer 7

They form hard brittle crystals with characteristic shapes NB pg, 11

Question 8

19. Which of the following is the correct name for a compound between magnesium and sulfur

Answer 8

magnesium sulfide NB pg, 6

Question 9

20. Atoms become positive ions by

Answer 9

Losing electrons NB pg, 3

Question 10

21. A group of covalently bonded atoms that act together as one charged atom is a

Answer 10

Crystal NB pg. 9

Question 11

22. How does an atom of aluminum become an ion?

Answer 11

It loses 3 electrons NB pg. 10

Question 12

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

Answer 12

Low melting point NB pg. 12

Question 13

25. Electrons involved in the formation of chemical bonds are called

Answer 13

Valence electrons NB pg, 11

Question 14

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

Answer 14

Sodium has a positive charge and chlorine has a negative charge NB pg. 12

Question 15

31. Electrons involved in bonding between atoms are

Answer 15

Valence electrons NB pg, 9

Question 16

32. Anions are formed by

Answer 16

Gaining electrons Nab pg 19

Question 17

33.The chemical bond formed when two atoms share electrons is called a

Answer 17

Covalent bond NB pg. 21

Question 18

34. What is a double bond

Answer 18

Two pairs of electrons shared between two Atoms Nab pg. 16

Question 19

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

Answer 19

2 NB pg, 14

Question 20

40. The properties of a compound or ______ the properties of the elements that form it

Answer 20

Different from NB pg. 8

Question 21

42. When electrons are transferred between two atoms A covalent bond is formed
    T or F

Answer 21

False, shared NB pg .19

Question 22

45 when ions having a positive charge form bonds with ions having a negative charge, the charge on the resulting compound is

Answer 22

Zero NB pg. 7

Question 23

46. When an ionic compound forms the total number of positive charge and the total number of negative charge must be

Answer 23

Equal NB pg 18

Question 24

48. Chemical bonds form when valence electrons are _______Between atoms

Answer 24

Shared/transferred NB pg. 19

Question 25

50. In double covalent bond, ______ electrons are shared between two atoms

Answer 25

Four 2 pairs of NB pg, 16