Acids
Range of Acids pH?
1-7
Range of bases's pH scale?
7-14
What is the range of pH scale?
0-14
This number stands for the number of protons.
Atomic Number
Citric acid is found in many fruits, yet fruits are safe to eat. Which is most likely to be the pH of citric acid: 1, 5, 7, or 1?
5
Acid color of phenolphtalein?
Colourless
What reacts with an acid to form water and salt?
A base.
7 - Neutral
How many groups on the periodic table?
18
This element is the metalloid with the lowest atomic number?
Boron
Gives food a sour taste?
Acid
What does a water molecule that loses a hydrogen ion become?
Hydrogen ion(OH-)
What does the 'p' in pH stand for?
-log (negative logarithm)
The symbol Mg is for?
Magnesium
This element is the only nonmetal that is liquid at room temperature. It has an atomic mass of 79.90?
Bromine
What acid conducts electricity?
Electrolytes
Bases turn litmus paper to this color.
Blue
pH of Hydrochloric acid?
1
The sign of an element is called?
A symbol
These elements were undiscovered when the first Periodic Table was developed. They are the last group of elements to be added to the periodic table?
Noble gases
The reaction between an acid and a base results in the formation of water and this.
Salt
Coffee has a pH of 5. Given this information, coffee would be considered one of these.
Acid
What does either end of the pH scale show?
Acidity and Alkalinity
What is the most metallic element in the fourth period?
Potassium
This is the only metal that is liquid at room temperature?
Mercury