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WorksheetsFN43 - 2.00 Physical and Chemical Properties of Food
Total questions: 20
Worksheet time: 10mins
Frying a steak over a stovetop and sautéing brussels sprouts are examples of which type of heat transfer?
Conduction
Convection
Radiation
Solar
C, O, and Cl are examples of:
compounds
gasses
metals
symbols
Elements and compounds are classifications of:
formulas
ions
mixtures
pure substances
Carrie has determined that oxygen will bond with two other atoms. Which part of the periodic table has she used?
atomic mass
atomic number
element
symbol
Heating shortening to melt is an example of a/an:
endothermic reaction
heat capacity
phase change
source of radiation
Which type of energy is produced by microwave ovens and stove coils?
chemical
electrical
kinetic
radiant
Potassium, oxygen, and chlorine are examples of:
elements
gasses
metals
symbols
In which phase change is latent heat being released?
evaporation
freezing
melting
sublimation
Which type of energy is created by the movement of electrons?
chemical
electrical
nuclear
radiant
NaC2, KHC4H4O6, and NaCl are examples of:
compounds
elements
equations
gasses
Which characteristic of an acid is an example of a sensory analysis?
Low pH
Sour in taste
Turns organic dyes blue
High volatility
What is the difference between an acid and a base?
acids have a negative charge
acids produce surplus hydroxyl ions
bases have a negative charge
Bases produce surplus hydrogen ions
Which change results when water and baking powder are mixed?
chemical
latent
phase
physical
When compared to acidic foods, basic or alkaline foods taste:
bitter
salty
sour
sweet
Which is an example of a chemical change?
smelling vanilla flavoring
chopping onions and garlic
freezing punch rings
fermenting grapes
Alex noticed that the juice of a lemon is sour and the peel is bitter. Which conclusion is accurate?
lemon juice is basic
lemon peel is basic
the whole lemon is basic
the whole lemon is acidic
What impact does aging have on the pH of eggs?
decreases the acidity
increases the acidity
moves closer to a neutral pH
no measurable change
What is the difference between a neutral solution and an acidic solution?
An acidic solution has a negative charge
An acidic solution has equal amounts of positive and negative ions
A neutral solution has a positive charge
A neutral solution has equal amounts of positive and negative ions
Which pH is an example of a neutral solution?
5
6
7
8
What is the impact of a pH higher than 4.6 in food products?
The food is at risk for bacterial contamination
The food is considered highly acidic
The food must be diluted before eating
The food will spoil slowly
