The pH scale
How long does the pH scale range?
0-14
What is the charge of oxygen?
-2
When water boils it goes from a ____ to a ____
liquid, gas
is rusting a chemical change?
Yes
Who proposed the first idea of atoms?
John Dalton
What pH level is considered neutral?
7
What does redox mean?
reduction-oxidation
What state of matter has molecules that are very spread out?
Gas
What type of change is cutting paper?
Physical change
Who created the "plum pudding" model?
J.J. Thompson
Whats an example of an acidic substance?
Lemon juice, spit, stomach acid
What is a redox reaction?
Chemical reactions involving the transfer of electrons
What is it called when ice turns into water?
Melting
What type of change is wood burning?
Chemical change
Who conducted the gold foil experiment?
Ernest Rutherford
Whats an example of a basic solution?
Baking soda, Soap, Detergent
What is the charge of Flourine?
-1
What change is condensation?
gas to liquid
Does mixing salt and water create a new substance?
No
What does pH stand for?
What does oxidation mean?
the loss of electrons
What state of matter could water possibly be in?
solid, liquid, gas
A firework exploding is a ___ change.
chemical