Water Food Science

Which is not a function of water in the body?

• Maintaining body temp

• transporting nutrients

• to become part of body tissue

• keep you full

What does hydrated mean?

• anything that makes a substance impure

• full of water

• when your body lets you know you need water

• free of water

What is free water?

• it is free of water

• it is easily separated from food tissues

• it is tied to the structure of large molecules

• it is any chemical compound that is loosely bound with water

How does the water molecule differ from other compounds of similar size?

• Water has higher melting and boiling points, less surface tension, lower density, and a greater ability to conduct energy

• Water has higher melting and boiling points, more surface tension, lower density, and a greater ability to conduct energy

• Water has lower melting and boiling points, more surface tension, lower density, and a greater ability to conduct energy

• Water has higher melting and boiling points, more surface tension, higher density, and a greater ability to conduct energy

Describe the structure of water.

• composed of nitrogen and hydrogen held together by bonds

• composed of carbon and hydrogen covalently bonded

• composed of 2 oxygen and 1 hydrogen held together by bonds

• composed of one oxygen and 2 hydrogens held together by covalent bonds

What is a nutrient?

• chemical contaminant

• naturally occurring color pigments

• food components necessary to sustain life

• the force of weight pressing down on a surface

Describe the difference between hard and soft water

What is a contaminant or pollutant?

• measure of partial water pressure over a food

• anything added to a completely pure substance

• anything that makes a substance impure or unsuitable

• food components necessary to sustain life

How are atmospheric pressure, temp, and boiling point related?

• as atmospheric pressure changes the boiling point of water changes, at lower altitudes where the atmospheric pressure is higher, water boils at higher temperatures

• as atmospheric pressure changes the boiling point of water changes, at higher altitudes where the atmospheric pressure is higher, water boils at higher temperatures

• as atmospheric pressure changes the boiling point of water changes, at lower altitudes where the atmospheric pressure is lower, water boils at higher temperatures

• as atmospheric pressure changes the boiling point of water changes, at lower altitudes where the atmospheric pressure is higher, water boils at lower temperatures

define impurity

• chemical compound loosely bound with water

• food components necessary to sustain life

• medium for transferring heat

• anything added to a completely pure substance