2023 Chemistry/ Water Final Review

Front

What type of bond is found within a water molecule?

Back

Polar covalent bond: A type of bond where electrons are shared unequally between atoms, resulting in a molecule with a partial positive charge on one end and a partial negative charge on the other.

Front

Which of the following is not a property of water?

Back

It takes very little energy to increase the temperature of water which makes it a good coolant: This statement is incorrect; water actually has a high specific heat capacity, meaning it requires a lot of energy to change its temperature.

Front

What type of bond is found between water molecules?

Back

Hydrogen bond: A weak bond that occurs between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom.

Front

Which of the following is true about water?

Back

Water molecules are polar: This means that water has a partial positive charge on one side and a partial negative charge on the other, allowing it to interact with other polar substances.

Front

What is the charge of a solute that is positively charged?

Back

Positively charged: This indicates that the solute has lost one or more electrons, resulting in a net positive charge.

Front

Define cohesion in the context of water.

Back

Cohesion: The property of water that allows molecules to stick to each other, which is responsible for the formation of water droplets and the ability of water to move through plant xylem.

Front

What is the significance of water's high specific heat capacity?

Back

High specific heat capacity: This property allows water to absorb and store large amounts of heat without significantly changing temperature, which helps regulate climate and maintain stable environments.

Front

Explain the concept of polarity in water molecules.

Back

Polarity in water molecules: Water has a bent shape and an unequal distribution of charge, leading to a polar molecule with a partial negative charge near the oxygen atom and partial positive charges near the hydrogen atoms.

Front

What role do hydrogen bonds play in the properties of water?

Back

Hydrogen bonds: These weak interactions between water molecules contribute to water's unique properties, such as high surface tension, high boiling point, and the ability to dissolve many substances.

Front

What is the difference between a solute and a solvent?

Back

Solute vs. Solvent: A solute is a substance that is dissolved in a solution, while a solvent is the substance that does the dissolving, typically present in greater amount.