Summaries after sample
, The Periodic Table
The Periodic Table of Elements
Names of compounds
• Metals - shiny, can be pounded into shapes,
• Compound names show the elements present and good conductors of electricity and heat.
in it. • Non-metals - dull, brittle, and don't conduct
• Some are known by common names – e.g. electricity and heat.
water (H2O) and ammonia (NH3). • Semi-metals - share characteristics with
• Some show how many atoms of the element metals and non-metals and are found both
are present: sides of the zig-zag line.
- Mon(o) – 1 atom.
- Di – 2 atoms.
Sample
- Tri – 3 atoms. T1:
Compounds The Periodic Table of Elements
• Elements have a symbol, name, atomic number,
and mass number.
Summaries after sample •
•
•
Arranged in horizontal rows (periods) and vertical
columns (groups).
Developed by Dmitri Mendeleev in 1869.
Moving from right to left on the Periodic Table –
properties change from metallic to non-metallic.
Gold valued since
ancient times
• Gold - most malleable and ductile metal. Chemical formulae
• Gold was associated with wealth, leadership,
and prestige from ancient times. • Each element in a compound has its own symbol.
• Gold mining industry is the backbone of South • Compounds can be represented by chemical
Africa's economy. formulas.
• Formulas - indicate the ratio of elements.
T2-T1 Via Afrika Copyright © www.summariessa.co.za (DO NOT COPY)
GR9 NS Mind Map
,Sample
Summaries after sample
,Sample
Summaries after sample
,
,
,
,
, The Periodic Table
The Periodic Table of Elements
Names of compounds
• Metals - shiny, can be pounded into shapes,
• Compound names show the elements present and good conductors of electricity and heat.
in it. • Non-metals - dull, brittle, and don't conduct
• Some are known by common names – e.g. electricity and heat.
water (H2O) and ammonia (NH3). • Semi-metals - share characteristics with
• Some show how many atoms of the element metals and non-metals and are found both
are present: sides of the zig-zag line.
- Mon(o) – 1 atom.
- Di – 2 atoms.
- Tri – 3 atoms. T1:
Compounds The Periodic Table of Elements
• Elements have a symbol, name, atomic number,
and mass number.
• Arranged in horizontal rows (periods) and vertical
columns (groups).
• Developed by Dmitri Mendeleev in 1869.
• Moving from right to left on the Periodic Table –
properties change from metallic to non-metallic.
Gold valued since
ancient times
• Gold - most malleable and ductile metal. Chemical formulae
• Gold was associated with wealth, leadership,
and prestige from ancient times. • Each element in a compound has its own symbol.
• Gold mining industry is the backbone of South • Compounds can be represented by chemical
Africa's economy. formulas.
• Formulas - indicate the ratio of elements.
T2-T1 Via Afrika Copyright © www.summariessa.co.za (DO NOT COPY)
GR9 NS Mind Map
,