Aquatics Vocab 7,8 exam review

An acid is a substance that:

• Increases the concentration of hydroxide ions in a solution

• Decreases the concentration of hydrogen ions in a solution

• Increases the concentration of hydrogen ions in a solution

• Has a pH greater than 7

A base is:

• A substance that donates protons

• A substance that accepts protons

• A substance that donates electrons

• A substance that accepts electrons

What is a buffer?

• A temporary storage area for data

• A type of computer virus

• A programming language

• A hardware component

What is chemical equilibrium in seawater?

• A state where the chemical composition of seawater remains constant over time

• A state where seawater continuously changes its chemical composition

• A state where seawater has no chemical reactions occurring

• A state where seawater is completely pure

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Diffusion is the process of:

• Movement of particles from an area of higher concentration to an area of lower concentration

• Movement of particles from an area of lower concentration to an area of higher concentration

• Particles remaining stationary

• Particles moving randomly without any concentration gradient

The hydrologic cycle is:

• The process of water moving through the atmosphere, land, and oceans.

• The cycle of rock formation and erosion.

• The process of photosynthesis in plants.

• The cycle of carbon dioxide in the atmosphere.

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An ion is:

• A neutral atom

• An atom or molecule with a net electric charge

• A molecule with no charge

• A type of chemical bond

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An ionic bond is:

• a type of chemical bond where atoms share electrons

• a type of chemical bond where atoms transfer electrons

• a type of chemical bond where atoms share protons

• a type of chemical bond where atoms transfer protons

What is mixing time?

• The time it takes for a system to reach equilibrium

• The duration of a chemical reaction

• The time required for a solution to dissolve

• The period needed for a machine to operate

A mixture is a combination of two or more substances where each substance retains its own chemical identity.

• True

• False