Yr 10 Chemistry Revision

Question 1

Ionic compounds are more likely to shatter than Covalent compounds because:

Accepted Answer

If the like charges line up, they repel

Question 2

Periods on the periodic table are organised by the number of...

Accepted Answer

Electron shells

Question 3

Which of the following is the correct Ionic compound of Magnesium and Chlorine?

Accepted Answer

MgCl2

Question 4

Which of the following is Endothermic?

Accepted Answer

Right

Question 5

Which of the following correctly shows the Lewis dot diagram for CO2?

Accepted Answer

A

Question 6

How many Neutrons in Aluminium?

Accepted Answer

14

Question 7

Exothermic reactions are defined as:

Accepted Answer

Reactions which release heat energy

Question 8

Which of the following is a Covalent compound

Accepted Answer

CO2

Question 9

Which of the following will NOT affect the rate of a reaction

Accepted Answer

Size of particles

Question 10

Who created the first Periodic Table?

Accepted Answer

Mendeleev

Question 11

Which element is the most reactive?

Accepted Answer

Potassium

Question 12

Lithium will form which of the following Ions:

Accepted Answer

Li+

Question 13

Why was Mendeleev's periodic table so controversial, but important?

Accepted Answer

He made predictions of elements yet to be discovered

Question 14

Oxygen forms which of the following Ions

Accepted Answer

O2-

Question 15

Balanced the equation of Hydrogen gas reacting with Nitrogen gas to make Ammonia

Accepted Answer

D

Question 16

The nucleus of an atom is composed of:

Accepted Answer

Neutrons and Protons

Question 17

Ionic compounds form due to which of the following forces

Accepted Answer

Attraction between positive and negative charges

Question 18

Periodic Groups are arranged by the number of...

Accepted Answer

Valence electrons

Question 19

What are the missing numbers to balance the equation below?

Accepted Answer

2,4,3

Question 20

A chemical reaction involves which of the following

Accepted Answer

Electrons

Questions 20