Year 10 Revision

Multiple Choice

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Multiple Choice

Subatomic particles with a positive charge

• neutrons

• atomic mass

• protons

• isotopes

Multiple Choice

Value representing the number of protons in an element

• Atomic Mass

• Mass Number

• Valence Electrons

• Atomic Number

Multiple Choice

Subatomic particles that are neutral in charge

• Neutrons

• Protons

• Nucleus 

• Electrons

Multiple Choice

Which two subatomic particles make up the nucleus of an atom?

• Protons and Electrons

• Neutrons and Electrons

• Electrons and Protons

• Protons and Neutrons

Multiple Choice

What is the mass number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and electrons in the atom

Multiple Choice

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20

• 10

• 35

• 25

​Determining ionic charge

1. Find the element on the periodic table

2. Find the group it is in and determine the charge OR draw the Bohr diagram and determine how many electrons the atom needs to gain or lose to obtain a full valence shell

​Writing Formula

Ionic Compounds:

1. Determine ionic charge of the metal and non-metal atoms

2. Drop and swap the charges to obtain a neutral compound

Covalent Compounds:

1. Determine ionic charge of the non-metal atoms

2. Determine how many electrons the atoms needs to be considered stable

3. Determine how the electron will be shared (easier when drawn out)

Multiple Choice

What is the formula for a magnesium ion?

• Mg+

• Mg²⁺

• Mg^2-

• Mg^-

Multiple Choice

Mg²⁺ and Cl^- create...

• Mg₂Cl

• MgCl₂

• Mg₂Cl₂

• MgCl

Multiple Choice

Ca²⁺ and N^3- create...

• Ca₂N₃

• Ca₃N₂

• CaN₃

• Ca₂N

Multiple Choice

The formula of calcium phosphate is 

• CaPO₄

• Ca₂(PO₄)₃

• Ca₃PO₄

• Ca₃(PO₄)₂

Multiple Choice

The red numbers in the image below represent ________

• subscripts

• coefficients

• I don't know, and don't want to try

• None of the answers are correct

Multiple Choice

The blue numbers in the image below represent ________

• I don't know, and don't want to try

• coefficients

• subscripts

• none of the answers are correct

Multiple Choice

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O

• MgO

• Mg and MgO

• O and MgO

Multiple Choice

Balance this equation...
HgO --> 2Hg + O₂

• It is balanced 

• 2HgO --> Hg + O₂

• 2HgO --> 2Hg + O₂

• I don't know...Oh well!

Multiple Choice

Balance this equation...
Sb₂S₃ + O₂ --> Sb + SO₂

• It is balanced
• Sb₂S₃ + 3O₂ --> 2Sb + 3SO₂
• Sb₂S₃ + O₂ --> 2Sb + SO₂
• I don't know...Oh well!

Multiple Choice

Which of the following is an unbalanced equation?

• CaCO₃ --> CaO + CO₂

• PbO₂ + 2H₂-->2Pb + H₂O

• 2Na+ 2H₂O-->2NaOH + H₂

• CS₂ + 2O₂ --> CO₂ + 2SO₂