Test - Chemical Bonding Flashcards
1
Q
- Molecular Compounds do not conduct electricity because they…
A
Do not break up into ions. (NB 13, pg 23)
2
Q
- What is a characteristic of an ionic bond?
A
They form hard, brittle crystals with characteristic shapes. ( NB 13, pg 23)
3
Q
- What bond will Ca and Br form?
A
Ionic bond (NB 13, pg 27)
4
Q
- Anions are formed by…
A
gaining electrons (NB 13, 3)
5
Q
- Why do atoms of sodium and chlorine attract each other in a salt crystal?
A
Sodium has a positive charge and chlorine has a negative charge. (NB 13, pg 3)
6
Q
- Which is the property shared by most molecular compounds?
A
Low melting points (NB 13, pg 23)
7
Q
- How many electrons are shared between the hydrogen atoms in the molecule of H(2 SMALL) gas?
A
2 (NB 13, pg 22)
8
Q
- A group of covalently bonded atoms that acts together as one charged atom is a …
A
Polyatomic ion ( NB 13, pg 11)
9
Q
- What is correct?
A. Phosphorus trichloride
B. Phosphorus chloride
A
A (NB 13, pg 24)
10
Q
- When an atom gains an electron it becomes a POSITIVE ion.
A
F, negative (NB 13, pg 9)
11
Q
- Orderly crystal shapes, high melting points, and electrical conductivity when dissolved in water are properties of IONIC compounds.
A
T (NB 13, pg 23)
12
Q
- Chemical bonds form when valence electrons are ________ between atoms.
A
Shared (NB 13, pg3)
13
Q
- When an ionic compound forms, the total number of positive charges and the total of number of negative charges must be ________
A
Equal (NB 13, pg 3)
