Atomic Structure
Protons, neutrons and electrons
What are the three subatomic particles found in an atom?
Covalent
What type of bonding occurs between non-metal atoms?
Salt and hydrogen gas
What are the products of the reaction between an acid and a metal?
7
What is the pH of a neutral solution?
18g
What is the formula mass (GFM) of water (H₂O)?
13
What is the mass number of an atom with 6 protons and 7 neutrons?
Ionic lattice
What type of structure does sodium chloride have?
Magnesium + Oxygen → Magnesium Oxide
What is the word equation for the reaction of magnesium with oxygen?
H+ or Hydrogen ion
What ion is present in all acidic solutions?
C = n/V
What is the formula for calculating concentration?
Atoms of the same element with different numbers of neutrons
What is meant by the term isotope?
They have delocalised electrons that move freely
Why do metals conduct electricity?
Combustion
What type of reaction occurs when a substance burns in oxygen?
Increases towards 7
What happens to the pH of an acid when it is diluted?
1
How many moles are in 98g of sulfuric acid
2,8,2
What is the electron arrangement of a magnesium atom?
Tetrahedral
What is the shape of a methane (CH₄) molecule?
Increase temperature, Increase concentrations, decrease particle size, add a catalyst.
Name the three factors that can speed up a chemical reaction.
Calcium Chloride
Name the salt made from the reaction of Calcium carbonate with hydrochloric acid.
64g
what is the mass of 2 moles of oxygen molecules
20 neutrons
How many neutrons are in an atom of chlorine-37?
Each carbon atom is covalently bonded to four others in a strong giant structure
Explain why diamond has a high melting point.
Particles have more energy, so they collide more often and with more force, increasing successful collisions
Why does increasing temperature speed up a reaction?
HCl + NaOH → NaCl + H₂O
Write the balanced symbol equation for the neutralisation of hydrochloric acid with sodium hydroxide.
22g
A reaction produces 0.5 moles of CO₂ gas. Whatis the mass of gas that is produced?