QUIZ- Avigadro's number

Description

Chemistry (Unit 1+11 - Stoichiometry ) Quiz on QUIZ- Avigadro's number, created by yuvalgalshohet on 30/03/2014.
yuvalgalshohet
Quiz by yuvalgalshohet, updated more than 1 year ago
yuvalgalshohet
Created by yuvalgalshohet almost 10 years ago
47
1

Resource summary

Question 1

Question
What is a mole?
Answer
  • An animal
  • 6.02 x10^23 atoms
  • A gram of an element

Question 2

Question
What is avigadro's number?
Answer
  • Avigadro's constant or number is the number of atoms in a mole; 6.02 x10^23
  • 07865543290

Question 3

Question
What is meant by 'Structure of matter'?
Answer
  • How different matter is created: atoms ---> molecules ---> bulk compound atoms ---> bulk element atoms ---> ions ---> bulk ionic compound
  • How elements are structured in different temperatures

Question 4

Question
What is RAM?
Answer
  • Relative atomic mass; the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12. RAM is averaged over the different isotopes.
  • Memory in my computer

Question 5

Question
Find the RAM of Carbon, Magnesium and Francium respectively
Answer
  • 6, 12, 87
  • 12, 24, 223

Question 6

Question
What is meant by molecular mass?
Answer
  • Molecular mass is the total mass of all the molar masses of atoms in a molecule
  • Molecular mass is the mass of a molecule of CO2
  • Molecular mass is the mass of one atom in a mole

Question 7

Question
What is the difference between RAM and AMU?
Answer
  • Atomic Mass Units make up the Relative Atomic Mass
  • Relative Atomic Mass is the average mass of an element, when considering all its isotopes. Atomic Mass Unit is one twelfth of a carbon atom.
  • Relative Atomic Mass is the Atomic Mass Unit divided by the number of atoms involved

Question 8

Question
What is the formula for the number of moles?
Answer
  • Moles= Total Mass/ Molecular Mass
  • Moles= Total Mass/ Relative Atomic Mass
  • Moles = Total Mass/ 6.02x10^23

Question 9

Question
Find the Empirical Formula for NaOH + P4 +H2O --> PH3 + NaH2PO2
Answer
  • 3NaOH + P4 +6H2O --> PH3 + 3NaH2PO2
  • 3NaOH + P4 +3H2O --> PH3 + 3NaH2PO2
Show full summary Hide full summary

Similar

Chemistry General Quiz - 2
lauren_johncock
Chemistry Quiz General -3
lauren_johncock
AS Chemistry - Enthalpy Changes
Sarah H-V
Ionic Bondic Flashcards.
anjumn10
Chemical Symbols
Keera
Chemistry GCSE Review - States of Matter, Particles, Atoms, Elements, Compounds and Mixtures
Morgan Overton
Acids and Bases
Sarah Egan
Using GoConqr to study science
Sarah Egan
Electrolysis
lisawinkler10
Acids and Bases
silviaod119
Elements, Compounds and Mixtures
silviaod119