Understanding Water and Solutions in Chemistry

What percentage of the human body is made up of water?

• 80%

• 50%

• 70%

• 60%

What is the primary reason water is essential for life?

• It is a solvent

• It is a nutrient

• It is a gas

• It is an energy source

Which substance is known as a strong oxidizer used in bleaching?

• Sodium chloride

• Carbon dioxide

• Hydrogen peroxide

• Sodium hypochlorite

What makes water an effective solvent?

• Its taste

• Its polarity

• Its color

• Its odor

What type of molecule is sugar in relation to its solubility in water?

• Non-polar

• Polar

• Metallic

• Ionic

What happens when a polar molecule like sugar is mixed with water?

• It forms a gas

• It precipitates

• It decomposes

• It dissolves

What are electrolytes?

• Carbohydrates

• Proteins

• Ions in a solution

• Fats

Who proposed the terms 'anion' and 'cation'?

• Michael Faraday

• Albert Einstein

• William Whewell

• Svante Arrhenius

What property of water decreases the attraction between ions?

• Viscosity

• Dielectric property

• Surface tension

• Density

What is the role of electrolytes in the human body?

• Conduct electrical signals

• Provide energy

• Store vitamins

• Build proteins