Rate of Reaction
Atomic Structure/
Chemical Formula
Chemical Formula
Acids and Bases
Homologous Series
Bonding
100
What is a catalyst?
Substance that speeds up a chemical reaction but is not used up in a reaction
100
Why is an atom neutral?
Atoms are neutral because the number of electrons is equal to the number of protons
100
Finish the sentence
Acidic solutions have a pH _______
below 7
100
What is the definition of a homologous series?
Family of compounds with same general formula and similar chemical properties
100
How many atoms are present in a diatomic molecule?
2
200
What effect does increasing the particle size have on the rate of reaction?
Decreases reaction rate
200
What is an isotope?
Atoms with the same atomic number but different mass numbers
Atoms with the same number of protons but different numbers of neutrons
200
What is true of concentrations of ions in a neutral solution?
H+ ions and OH- ions have equal concentration
200
What is the general formula for alkanes?
CnH2n+2
200
What types of atoms are present in a covalent bond?
Non-metals
300
What effect does increasing the concentration of a reactant on rate of reaction?
Increases the rate of reaction
300
Write the nuclide notation for an atom of chlorine with 18 neutrons
35
Cl
17
300
What happens to the concentration of ions in an alkaline solution when diluted?
The overall concentration of OH- ions decrease when an alkaline solution is diluted
300
What is the functional group present in carboxylic acids?
Carboxyl group (-COOH)
300
What is an ionic bond?
Electrostatic attraction between positive and negative ions
400
What is the units if a student measures the mass of gas being produced over different time intervals in seconds?
g/s
gs-1
400
Write the name for a compound when Calcium, carbon and oxygen react together
Calcium Carbonate
400
Soluble non-metal oxide form what type of solutions when dissolved in water?
Acidic solutions
400
What is the test for an unsaturated hydrocarbon compound?
Unsaturated compounds decolourise bromine solution (bromine changes from brown to colourless)
400
Why do ionic compounds conduct electricity?
Ions are free to move when in solution or molten
500
Draw a graph to show the difference in rate when the reaction is carried out at a low and high temperature
500
What is the mass of 1 mole of sodium hydroxide?
(use your databook)
40
500
What is the definition of a spectator ion?
Spectator ions are ions that remain unchanged during a chemical reaction
500
What type of reaction do alkenes undergo?
Addition reactions
500
Why do covalent molecular structures have a low melting point?
Less energy to break the weak forces of attraction between the molecules