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Atoms and Reactions

Description

AS OCR: Unit 1 module 1
clidna
Quiz by clidna, updated more than 1 year ago
clidna
Created by clidna about 10 years ago
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Resource summary

Question 1

Question
Number of moles= Volume/24
Answer
  • True
  • False

Question 2

Question
Number of moles= volume X concentration
Answer
  • True
  • False

Question 3

Question
Number of moles= mass/mr
Answer
  • True
  • False

Question 4

Question
0 degrees kelvin= 273 degrees celsius
Answer
  • True
  • False

Question 5

Question
1 moles= 6.022 X 10^23
Answer
  • True
  • False

Question 6

Question
The nucleus is made up of?
Answer
  • Protons, neutrons & electrons
  • Neutrons & protons
  • Protons

Question 7

Question
A: The mass number (nucleon number) tells you?
Answer
  • Number of protons
  • Number of protons and neutrons
  • Number of protons, neutrons and electrons

Question 8

Question
Z: Atomic (proton) number tells you?
Answer
  • Total number of protons and neutrons.
  • Number of protons.

Question 9

Question
Isotopes are atoms of the same element with a different number of neutrons.
Answer
  • True
  • False

Question 10

Question
Isotopes have the same mass numbers.
Answer
  • True
  • False

Question 11

Question
Between isotopes chemical properties vary but physical properties are the same.
Answer
  • True
  • False

Question 12

Question
Relative atomic mass (Ar)
Answer
  • the amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the C-12 isotope.
  • weighted mean mass of an atom of an element compared with 1/12 of the mass of a C-12 atom.
  • mass per mole of a substance (g/mol)

Question 13

Question
Acids (proton donor, H+ ions being the active ingredient)
Answer
  • HCL
  • MgO
  • NaOH
  • H2SO4

Question 14

Question
Bases (proton acceptors)
Answer
  • Metal Oxides and hydroxide
  • White solutions
  • Ammonia
  • Amines

Question 15

Question
Alkalis are insoluble bases.
Answer
  • True
  • False

Question 16

Question
A salt is an ionic chemical compound.
Answer
  • True
  • False

Question 17

Question
A positive ion is known as a?
Answer
  • Cation
  • Anion

Question 18

Question
A salt is produced when an acid is neutralised with?
Answer
  • A carbonate
  • A base
  • An alkali

Question 19

Question
Ammonium salts can be used as artificial fertilisers.
Answer
  • True
  • False

Question 20

Question
The oxidation state of a free element is it's group number.
Answer
  • True
  • False

Question 21

Question
The sum of the oxidation states in a molecule= number of atoms in the molecule.
Answer
  • True
  • False

Question 22

Question
Oxidation is the?
Answer
  • loss of electrons
  • gaining of electrons

Question 23

Question
After reduction the oxidation state?
Answer
  • decreases
  • increases

Question 24

Question
A reducing agent is oxidised in the reaction.
Answer
  • True
  • False

Question 25

Question
Monatomic ions oxidation states is their charge.
Answer
  • True
  • False
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