Elements and Compounds

Frage	Antworten
How are calcium, potassium and sodium different from other etls?	1) They turn white really quickly in the air. 2) They are really soft so you can cut through them easily.
A Compound	Atoms of different elements react and join together
Most elements are metals	A few elements are non-Metals
He	Helium
H	Hydrogen
O	Oxygen
Li	Lithium
Can mixtures contain elements and compounds?	Yes, the air contains compounds like carbon dioxide and elements like oxygen.
Metal	Solid, Malleable, Metallic, Shiny, High Density, Conducts Heat, Conducts Electricity
Why does orange juice taste sweet and sour at the same time?	It tastes sweet as there are certain types of sugars in it and it tastes sour as there are certain types of acids in it.
Non-Metal	Low Density, Dull, Doesn't conduct heat or electricity, Brittle, Soft
Element	A single atom
Are fire and Water elements?	No
Cl	Chlorine
Why do radiators work so well.	They conduct heat and electricity really well.
N	Nitrogen
Why is gold good for jewellery?	Stays shiny and it is a solid
Mixture	Has the properties of the original substances.
Why is mercury different to most metals?	It is a liquid not a solid
Carbon.	There are multiple different types of carbon. They all have completely different arrangements: Diamond, Graphite, Charcoal, Phosphorus.
Non-Metals that are gases at room temperature...	Oxygen and Helium
Is water a compound or a mixture?	Water is a compound as hydrogen and oxygen have been combined.
Difference between elements and compounds....	An element is just one type of atom whereas compounds are more than one type of atom that have been joined together.

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