Chemistry - 9 Chapter - 5Chemical BondingTest - 5

Chemistry - 9 Chapter - 5
Chemical Bonding
Test - 5

1. SA-Why atoms want to attain atomic structure of the nearest noble gas?

a) Two answers are correct!
b) Due to force of attraction
c) Because this is a more stable electronic structure
d) Due to force of repulsion

2. Define a compound?

a) Something made by the combination of three or more different things normally combined chemically.
b) Something made by the combination of two or more different things normally combined chemically.

3. SA - When a compounds is formed?

a) When two similar elements join together
b) When different elements react chemically
c) Two answers are correct
d) When different elements react physically'

4. What is sodium chloride(NaC)? Short..Answer............Remember.By.Heart.....................
Blue crystalline compound, found naturally in seawater and mines and used as a preservative and in foods. Salt consists mainly of sodium chloride.

a) Blue crystalline compound, found naturally in seawater and mines and used as a preservative and in foods. Salt consists mainly of sodium chloride.
b) Colorless crystalline compound, found naturally in seawater and mines and used as a preservative and in foods. Salt consists mainly of sodium chloride.

5. Compound of sodium chloride is formed when sodium______?

a) Give one electron to chlorine
b) Give seven electron to chlorine!
c) Takes on electron from chlorine
d) Take seven electron from chlorine

6. Sodium has _____electrons in outer most orbit?

a) eight
b) One
c) five
d) seven

7. Chlorine has ____electrons in its outer most orbit?

a) 5
b) 1
c) 2
d) 7

8. In a chemical action atom, which gives one or more electrons, becomes?

a) Molecule
b) Neutrally charged
c) positively charged
d) Negatively charged

9. In a chemical action atom, which received electron, become?

a) Molecule
b) Positively charged
c) Neutral
d) Negatively charged

10. Electron participate in a chemical reaction come from the inner most shell?

a) True
b) False

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