Sherpa

Existing user?

Chemistry

GCSE · Edexcel

QuestionsFlashcards

Group 1
- Group 1 (Alkali Metals)
  6
- Group 1: Reactivity & Electronic Configurations
  6
Group 7
Group 0

Qualitative Analysis: Tests for Ions
Hydrocarbons
Polymers
Alcohols & Carboxylic Acids
Bulk & Surface Properties of Matter Including Nanoparticles
- Nanoparticles
  7
- Ceramics, Polymers, Composites & Metals
  5

Atomic Structure Flashcards

All 6 cards in this deck

Describe the structure of an atom.: A nucleus containing protons and neutrons, surrounded by electrons arranged in shells.
What is the relative charge and relative mass of a proton?: Charge $+1$ , mass $1$ .
What is the relative charge and relative mass of a neutron?: Charge $0$ , mass $1$ .
What is the relative charge and relative mass of an electron?: Charge $-1$ , mass very small (about $\frac{1}{1835}$ ).
Why does an atom have no overall electrical charge?: It contains equal numbers of protons and electrons, so the $+1$ and $-1$ charges cancel out.
True or false? An atom is neutral because it has equal numbers of protons and neutrons.: False. It is neutral because it has equal numbers of protons and electrons; neutrons have no charge.