Triple Chemistry Neutralisation, Evaporation and Titration

Oscar is doing a science experiment. He mixes an acid with an alkali in a beaker. Complete the equation: Acid + Alkali --> ____ + Water

• Base

• Acid

• Alkali

• Salt

Oliver is performing a chemistry experiment. He mixes Zn(OH)₂ with HNO₃ and observes the following reaction:
Zn(OH)₂ + HNO₃   ---> H₂O  + Zn(NO₃)₂
Identify the salt formed in this reaction.

• Zn(OH)₂

• HNO₃

• H₂O

• Zn(NO₃)₂

Tags

NGSS.MS-PS1-5

During a chemistry lab, Rosie is performing a titration experiment. What is the endpoint of her titration?

• Where the amount of acid and base are equal as shown by a color change

• Where there is no base

• When the volume of base in the burette is used up

• When there is no acid

Arthur is preparing a solution in the chemistry lab and needs to accurately measure and transfer a specific volume of liquid. What is this piece of apparatus called?

• Pipette

• Burette

• Janette

• Cuvette

During a titration experiment, Max needs to accurately measure and deliver a specific volume of liquid. What is this piece of apparatus called?

• Pipette

• Burette

• Janette

• Cuvette

Sophie is performing a titration experiment in her chemistry class. What is the reading on this burette?

• 24.0cm³

• 25.8cm³

• 24.2cm³

• 23.9cm³

Florence is conducting an experiment in the lab where she neutralises potassium hydroxide with sulphuric acid. What is the salt produced in her experiment?

• Hydrogen sulfate

• Potassium chloride

• Potassium sulfite

• Potassium sulfate

Leo and Lily are performing a titration experiment in their chemistry class. They are discussing which indicator to use. Why is a universal indicator not normally used as an indicator when performing a titration?

• It changes color over a very narrow pH range.

• It changes color over a very wide pH range.

• It decomposes too quickly.

• It only changes color in acidic solutions.

During a science experiment, Ava adds phenolphthalein to a solution. She observes that in a basic solution, it turns pink. What color will phenolphthalein change to if Ava adds it to an acidic solution?

• Red

• Colorless

• Yellow

• Blue

Priya is performing a titration in her chemistry lab using a strong acid and a strong base. Which indicator should she choose for the most accurate result?

• Bromothymol blue

• Methyl orange

• Phenolphthalein

• Universal indicator