Acid Base intro Exit Ticket

Which of the following formula is an acid?

• Br₂

• HBr

• Ca(OH)₂

• CH₄

Answer explanation

Notice the "H" listed at the beginning of formula HBr.

Which of the following is a base?

• CH₄

• HCl

• Sr(OH)₂

• PCl₃

Answer explanation

ionic compounds containing hydroxide, OH^- , are bases.

such as...

NaOH

KOH

Ca(OH)₂

or the answer to this problem...

Sr(OH)₂

An acid has a ​ (a)   pH

• low
• high
• neutral

Answer explanation

the scale gives an indication of acidity, but the numbering might be backwards of what you'd expect.

Low pH (less than 7) is acidic

High pH (more than 7) is basic

pH of 7 is neutral.