chemical changes Flashcards
1
Q
what is produced when metals and oxygen react?
A
metal oxides
2
Q
name a strong and a weak acid
A
strong: sulfuric
weak: citric
3
Q
what is an alloy?
A
a mixture of w or more elements where at least 1 is a metal.
4
Q
the reaction of hydrogen with an alkene will form a …
A
alkane
5
Q
what is an alkene?
A
unsaturated hydrocarbons which contain a double carbon bond
6
Q
define a monomer
A
a molecule that can be bonded to other identical molecules to form a polymer
7
Q
what is a polymer?
A
a large molecule made up of repeating subunits called monomers
8
Q
Why are most polymers solid at room temperatures?
A
as the intermolecular forces between polymer molecules are strong.
9
Q
What is a fuel cell?
A
a cell producing an electric current direct from a chemical reaction
