Acids and Bases Test

What is an acid?

• a.       Substances that break apart in water to form a hydrogen ion (H⁺). They have a sour taste, react with metals and carbonates, and turns blue litmus paper red

• a.       Substances that break apart in water to form a hydroxide ion (OH^-). They have bitter taste, slippery feel, react with other bases and acids, and turns red litmus paper blue

Tags

NGSS.MS-PS1-1

What is a base?

• a.       Substances that break apart in water to form a hydrogen ion (H⁺). They have a sour taste, react with metals and carbonates, and turns blue litmus paper red

• a.       Substances that break apart in water to form a hydroxide ion (OH^-). They have bitter taste, slippery feel, react with other bases and acids, and turns red litmus paper blue

An example of a base is:

• lemon juice

• tomato

• soap

• hydrochloric acid

An example of an acid is:

• soap

• Baking soda

• Lemond juice

• Drain cleaner

A range of values from 0-14 that expresses the concentration of hydrogen ions in a solution is called:

• Neutralization

• Acid rain

• pH scale

• Ion scale

A reaction between an acid and base result in a solution that is neither acidic or basic. This is called:

• neutralization

• salt

• balancing scale

• concentration

A lemon has a low pH level and has a pH level of around 2. Is the lemon an acid, base or neutral?

• Acid

• Base

• Neutral

Ammonia has a high pH level between 11 and 12. Is the ammonia an acid, base or neutral?

• Acid

• Base

• Neutral

Baking soda has a pH level around 9. Is baking soda an acid, base or neutral?

• Acid

• Base

• Neutral

Tomatoes have a pH level between 4 and 4.5. Are tomatoes an acid, base or neutral?

• Acid

• Base

• Neutral