Grade 9 - Wednesday 23 Dec
10 Questions
| Total Attempts: 73
This quiz includes the following lessons:- compounds and molecules - ionic and covalent bonding
Questions and Answers
- 1.What is a bond that forms when electrons are transferred from one atom to another?
- A.
Ionic bond
- B.
Crystal bond
- C.
Electron bond
- D.
Atom bond
- 2.Why can metals bend without breaking?
- A.
Metals contain positively charged ions
- B.
Metals contain constantly moving electrons
- C.
Metals contain ionic bonds
- D.
Metals contain moving ions
- 3.What is the charge of sodium ion with 11 protons and 10 electrons?
- A.
+1
- B.
+2
- C.
-1
- D.
-2
- 4.What do you call a force of attraction that holds two atoms together?
- A.
Chemical hold
- B.
Chemical bond
- C.
Crystal bond
- D.
Atom bond
- 5.Ionic compounds conduct electricity
- A.
In their solid form
- B.
When melted of dissolved
- C.
In all cases
- D.
They do not conduct at all
- 6.Any compound has a total charge of ................
- 7.Ratio of calcium ions to chloride ions in CaCl2 is .............. : ...............
- 8.A hydrogen molecule has an electron structure similar to the noble gas ......................
- 9.Bond that forms when atoms share one or more pairs of electrons
- 10.How many electrons are shared in a molecule of O2
- A.
4
- B.
2
- C.
6
- D.
8
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