Chemistry Mock

Created by

Amelia Parker

Cards (32)

What number on the pH scale indicates neutral?
7
What numbers on the pH scale indicate a base/alkali?
7-14
What numbers on the pH scale indicate an acid?
0-6 (anything below 7).
What is electrolysis of an aqueous solution?
A process in which an electrical current is passed through an aqueous solution to cause chemical reactions. This splits the ions in the solution into individual atoms, allowing them to gain or lose electrons.
What are the different states of matter?
Solid, liquid, gas and plasma.
Identify how the molecules in a solid are arranged and their qualities.
Regular, repeating patterns. They are held firmly in place but can vibrate within a limited area.
Identify how the molecules in a liquid are arranged and their qualities.
They flow easily around one another. They are kept from flying apart by attractive forces between them and take the shape of their containers.
Identify how the molecules in a gas are arranged and their qualities.
They fly in all directions at great speeds. They are so far apart that the attractive forces between them are insignificant.
Identify the qualities in plasma.
At the very high temperatures of stars, atoms lose their electrons. The mixture of electrons and nuclei that results is the plasma state of matter.
What are the Group 7 elements?
Chlorine, bromine and iodine.
What are the Group 7 elements also known as?
The halogens.
What is the nucleus' charge in an atom?
Positive.
What is the nucleus surrounded by in an atom?
A cloud of negatively charged electrons.
What is a limiting reactant/reagent?
The reactant that gets consumed first in a chemical reaction and therefore limits how much product can be formed.
What are metals extracted from their ores dependent on?
Their position in the reactivity series.
What is a chemical change?
A change of materials into another, new materials with different properties and one or more new substances are formed.
What is bond energy?
A measure of the amount of energy needed to break apart one mole of covalently bonded gases.
What are the seven main acids/strong acids?
Chloric acid, hydrobromic acid, hydrochloric acid, hydroiodic acid, nitric acid, perchloric acid and sulfuric acid.
Why are the seven main acids "strong acids"? 
They can completely dissociate in water.
What is a weak acid?
Acids that do not completely dissociate into their constituent ions when dissolved in solutions.
What happens when a weak acid is dissolved in water? 
An equilibrium is established between the concentration of the weak acid and its constituent ions.
What are the three main bonding types?
Ionic, covalent and metallic.
What is bonding and structure?
The bonding between atoms or ions in substances will control both those substances chemical properties as well as their structural and physical properties.
What is quantitative chemistry?
It enables chemists to calculate known quantities of materials.
Reacting mass calculation:
unknown mass = (known mass ÷ total Mr of known substance) × total Mr of unknown substance
What is concentration?
The amount of a substance in a defined space.
What are the properties of a giant covalent structure?
They are solids at room temperature and have very high melting points. They are very strong.
What is an alloy?
A metallic substance composed of two or more elements as either a compound or a solution.
What is the polymer?
A multidisciplinary field that involves synthetic polymers, biopolymers, polymer characterization, designing and fabrication of new innovative products as they are related to a safer and sustainable environment.
What is covalent bonding?
A covalent bond is formed when a pair of electrons is shared between two atoms. These shared electrons are found in the outer shells of the atoms. In general, each atom contributes one electron to the shared pair of electrons.
What is ionic bonding?
An ionic bond is a chemical bond formed when one atom gives up one or more electrons to another atom. Ionic bonds are also known as electrovalent bonds.
What is metallic bonding? 
A force that holds atoms together in a metallic substance.