FS S6 Water Pt 1 Question Preview (ID: 37085)


Standard 6 Concept Review. TEACHERS: click here for quick copy question ID numbers.

Thirst does not occur until...
a) our body is already in short supply of food
b) our body is too full of water molecules
c) our body is already in short supply of water
d) our body's metabolism speeds up

the point at which a substance changes from a liquid into a gas
a) altitude point
b) boiling point
c) phase change point
d) bond release point

this term means the height above the earth and also affects cooking times and temps...
a) altitude
b) attitude
c) sea level
d) atmospheric pressure

What factors does water influence in food?
a) smell, taste, and sound
b) acidity and alkalinity
c) water activity, static electricity, and acidity
d) taste, texture, and appearance

A property of water is that it transfers heat energy. This term for this is...
a) heat mean
b) heat mode
c) heat medium
d) heat transference

A property of water is that it dissolves many substances. The term for this is...
a) universal solution
b) universal solvent
c) universal studios
d) acidity

A property of water is adhesion. This means...
a) acid rain is produced during the water cycle
b) water repels other types of molecules
c) water sticks to other non-water molecules
d) water sticks to other water molecules

A property of water is cohesion. This means...
a) acid rain is produced during the water cycle
b) water repels other types of molecules
c) water sticks to other non-water molecules
d) water sticks to other water molecules

You can always make water safe by boiling it to kill the contaminants
a) true
b) false
c)
d)

a measure of the water in an item and is defined as the ratio of vapor pressure of a substance
a) water activity
b) water impurity
c) water contaminant
d) water pressure

term describing substances other than water that is in water
a) foreign agents
b) solvents
c) ions
d) impurities

which is NOT a natural phase of water?
a) solid
b) plasma
c) liquid
d) gas

these have a pH scale rating between 7.1 and 14
a) acids
b) bases
c) neutral items
d) organic items

These have a pH scale rating between 0 and 6.9
a) acids
b) bases
c) neutral items
d) alkaline items

Which of the following is NOT a function of water in cooking?
a) heat medium
b) supply vitamins and minerals
c) universal solvent
d) freezing agent

refers to force between molecules at the outside edge of a substance
a) atmospheric pressure
b) covalent bond
c) surface tension
d) water activity

Water is this type of molecule, which means it has charged poles and likes to bond...
a) polar
b) non-polar
c) hydrophobic
d) thot

pH in the word pH scale, basically stands for...
a) power of (or potential of) hydrogens
b) polar hydrogens
c) point of hydration
d) partial hydrogen content

What 2 substances are commonly used to affect water's freezing point and boiling point?
a) acids and bases
b) salt and sugar
c) ice and heat
d) fats and carbohydrates

Which of the following is NOT a type of contaminant of water?
a) cognitive
b) physical
c) chemical
d) biological

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