6.2

..................................... is used to treat water to reduce the acidity of water.

• alkali

• slaked lime

• antacid

• vinegar

The reaction between an acid and alkali produces ____________

• salt

• acidic solution

• water

• alkaline solution

Tags

NGSS.MS-PS1-5

What type of reaction occurs when you react an acid with an alkali?

• combustion

• decomposition

• no reaction

• neutralisation

Tags

NGSS.MS-PS1-5

What is this separation method?

• Evaporation

• Filtration

• Separating funnel

• Distillation

This separation method is called...

• Magnetism

• Filtration

• Distillation

• Evaporation

Which method can you use to separate sand and iron filings?

• Distillation

• Separation Using Magnet

• Filtration

• Evaporation

Ink can be separated by a method of __________________.

• distillation

• filtration

• chromatography

• sedimentation

Filtration and evaporation are...

• A mixture of two substances.

• A homogeneous mixture.

• Methods to separate the components of mixtures.

• A physical combination.

What is the pH of a neutral solution at 25°C?

• 7

• 6.2

• 8

• 5

Which of the following is a characteristic of a strong acid?

• Completely ionizes in solution

• Partially ionizes in solution

• Has a pH of 6.2

• Forms a weak conjugate base