Grade 9 - Wednesday 23 Dec
10 Questions
| 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
Correct Answer
A. Ionic 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
Correct Answer
B. Metals contain constantly moving electrons -
- 3.
What is the charge of sodium ion with 11 protons and 10 electrons?
- A.
+1
- B.
+2
- C.
-1
- D.
-2
Correct Answer
A. +1 -
- 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
Correct Answer
B. Chemical 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
Correct Answer
B. When melted of dissolved -
- 6.
Any compound has a total charge of ................
Correct Answer
zero
0 - 7.
Ratio of calcium ions to chloride ions in CaCl2 is .............. : ...............
Correct Answer
1: 2
1:2
1 : 2 - 8.
A hydrogen molecule has an electron structure similar to the noble gas ......................
Correct Answer
helium
He - 9.
Bond that forms when atoms share one or more pairs of electrons
Correct Answer
covalent
covalent bond - 10.
How many electrons are shared in a molecule of O2
- A.
4
- B.
2
- C.
6
- D.
8
Correct Answer
A. 4 -
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Mar 21, 2022Quiz Edited by
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Dec 23, 2009Quiz Created by
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