Acids/Bases and pH (plus review)

What is the atomic number of this element?

• 7

• 14

• 28

• 3.5

Answer explanation

Remember! The atomic number is the number above the chemical symbol

The scale shows the pH values for Solutions W, X, Y, and Z. Which statement correctly describes the relationship between solutions?

• Solution Z is more acidic than Solution X

• Solution W is more basic than Solution X

• Solution X is more acidic than Solution W

• Solution W is more acidic than Solution Y

Answer explanation

Remember! The LOWER the pH the MORE acidic it is

According to the pH scale, which pH would be the strongest acid?

• 3

• 6

• 9

• 12

Answer explanation

3 is the lowest pH, therefore it is the strongest acid

Which conclusion about Solution Z is BEST supported by the data?

• Solution Z is acidic

• Solution Z is neutral

• Solution Z is more basic than Solution Y

• Solution Z is more acidic than Solution X

What is an isotope?

• a version of an element that has a different number of electrons

• a version of an element that has a different number of protons

• a version of an element that has a different number of neutrons

• a version of an element that bonds ionically

Peat moss puts out Hydrogen ions in exchange for absorbing Ca and Mg ions. By adding hydrogen ions to the water around it, how is the moss affecting the pH of the bog?

• It's making it more basic

• It's making it more acidic

• It's making it more neutral

• It's not affecting the pH at all

When a solutin has a pH between 0 and 6.99 we classify this as...

• Neutral

• Basic

• Acidic

• Ionic

When added to solutions, acids....

• donate protons

• recieve protons

• steal electrons

• give up electrons

What is the atomic mass of oxygen?

• 8

• 16

• 32

• 4

Answer explanation

Remember! the atomic mass is found under the chemical symbol

When added to solutions, bases....

• donate protons

• recieve protons

• steal electrons

• give up electrons