Show:
pH
A & B Properties
Endo/Exothermic
Solutions
Other Topics
100
What is the pH of a neutral solution?
7
100
How do acids taste?
sour
100
Which type of reaction releases heat?
Exothermic reaction
100
What is an example of a solution?
salt water, sugar water, acids, bases, lemonade
100
What is the number in front of a chemical formula called in a chemical equation? (eg. 4 CO)
A coefficient
200
If you had a cleaning solution, is it likely to have a pH >7, or less than 7?
> 7, most cleaning solutions are basic
200
How do bases taste?
Bitter
200
Which type of reaction absorbs heat?
Endothermic reaction
200
Which is more concentrated, a cup of water with 10ml sugar, or a cup of water with 20 ml sugar?
A cup of water with 20 ml sugar.
200
What kind of chemical reaction is it when an acid reacts with a base?
Neutralization, it makes water + a salt
300
If a solution is 7.4, is it acidic or basic?
basic
300
If it feels slippery, is it an acid or a base?
base (like soap)
300
If the temperature of the solution decreases during the reaction, what kind of reaction is it?
endothermic
300
What is the name of the type of mixture with visibly different particles?
Heterogeneous
300
Why does water bend near an electric charge?
Water is a polar molecule
400
What are 3 ways to measure pH
pH strips, pH meter and pH indicators
400
Which turns red litmus paper blue
base
400
Fill in the blank: "in an exothermic reaction the _________ have more energy than the products."
reactants
400
What is the dissolved part in any solution?
Solute
400
What kind of ion do bases release in solution?
What is a hydroxide ion? (OH-)
500
What ions does pH measure?
The amount of Hydronium Ions (H3O+)
500
Which reacts with metals?
acids
500
What is the amount of energy needed to start a chemical reaction?
Activation energy
500
What is the substance that is used to dissolve the solution?
What is the solvent?
500
What are the 6 types of atoms that make up our body?
CHNOPS (carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulpher)