Basic Chemistry

1. Which of the following is true about protons?

Protons have a positive charge, found outside the nucleus and have 1 amu (atomic mass unit).

Protons are found in the nucleus, have a positive charge and a mass of 1 amu (atomic mass unit)

Protons have a negative charge, found outside the nucleus and have 1 amu (atomic mass unit)

Protons have no charge and are found in the nucleus and have a mass of 1 amu.

About This Quiz

Charges of subatomic particles; separating substances, basic Bohr model

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2. Sodium, when neutral, will have 11 electrons and 11 protons. What will its charge be if it loses 1 electron?

-1

(11+) and (11-) changes to 11 + and 10 -.

Explanation

(11+) and (11-) changes to 11 + and 10 -.

3. In a neutral atom, which two subatomic particles must be equal in number?

Protons and electrons

Protons and neutrons

Neutrons and electrons

Protons, neutrons and electrons

4. Which is a possible correct Bohr model for Carbon? (Use a periodic table for reference).

Option 1

Option 2

Option 3

5. Complete the following:

Element	# of protons	# of neutrons	Atomic mass (amu)	Atomic number	Number of electrons
W	38	49	X	Y	Z

W = Element is Indium , X = 87; Y = 49 and Z = 38

W = Element is Indium , X = 87; Y = 49 and Z = 49

W = Element is Strontium, X = 87; Y = 38 and Z = 38

W = Element is Strontium, X = 87; Y = 38 and Z = 39

6. Which method of separation would work best to separate the components of blood?

Distillation

Filtration

Chromatography

Centrifuge

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