1 Elements, compounds & mixtures Flashcards
(6 cards)
1
Q
Define an element
A
A substance containing only one type of atom
2
Q
Define a compound
A
A substance containing more than one type of atom, chemical bonded together
3
Q
Define a mixture
A
A combination of two or more substances (elements and/or compounds) that arenotchemically combined
4
Q
Define a pure substance
A
A substance that is completely made up of a single element or compound
5
Q
What does every pure substance have?
A
A specific, sharp melting point & boiling point (e.g. ice melts at 0c and pure water melts at 100c)
6
Q
Why is a mixture not pure?
A
It will melt or boil gradually over a range of temperatures
