Chemistry Of Life Vocabulary
Tests knowledge of properties of water.
- 1.Substances that are _______ will turn litmus (pH) paper reddish orange.
- A.
Acids
- B.
Bases
- C.
Neutral
- 2._________ tests as an acid on the pH scale.
- A.
Soapy water
- B.
Lemon juice
- C.
Pure water
- 3.Which part of an atom has a negative charge?
- A.
Proton
- B.
Neutron
- C.
Electron
- 4.Which part of an atom has a positive charge?
- A.
Proton
- B.
Neutron
- C.
Electron
- 5.Solutions with a pH of 7 are said to be ______________.
- A.
Neutral
- B.
Negative
- C.
Polar
- 6.In the water molecule, the oxygen atom tends to keep the hydrogens' electrons a little closer. This gives the oxygen end of the molecule a slightly ___________ charge.
- A.
Heavy
- B.
Positive
- C.
Negative
- 7.Any molecule with a positive and a negative end is said to be ____________.
- A.
Special
- B.
Water
- C.
Polar
- 8.Plants are able to bring water from their roots to all parts of the plant because of _____________ _____________.
- A.
Special pumps
- B.
Capillary action
- C.
Surface tension
- 9.In the winter, fish and other creatures are able to survive without freezing at the bottom of a lake because ___________________.
- A.
Warm water naturally sinks to the bottom of a lake.
- B.
They eat foods to produce heat all winter.
- C.
The frozen water (ice) floats, leaving the bottom of the lake protected against extremely cold air temperatures.
- 10.Water molecules are attractied to molecules of other substances because of a property called ___________.
- A.
Cohesion
- B.
Adhesion
- C.
Covalent bonding
- 11.Ice is ______________________ liquid water.
- A.
More dense than
- B.
Less dense than
- C.
Of the same density as
- 12.Water is able to ____________ many substances because water's polar molecules are attracted to other molecules and push their way into spaces to break up the substances.
- A.
Create
- B.
Freeze
- C.
Dissolve
- 13.What is the only substance that can be found somewhere on Earth in all three states--solid, liquid, and gas?
- A.
Water
- B.
Nitrogen
- C.
Oxygen
- 14.
This photo illustrates a property of water called ________ because you can see how the water molecules cling to each other to make a perfect sphere.- A.
Adhesion
- B.
Cohesion
- C.
Surface tension
- 15.
This photo shows the damaging result of acid rain on a forest. Acid rain is a result of water's ability to ________________.
- A.
Change its temperature quickly
- B.
Dissolve other substances
- C.
Expand when frozen
- 16.Which is an example of adhesion?
- A.
Water boils at a very high temperature.
- B.
Water molecules "stick" to each other.
- C.
Water tends to creep up the sides of a test tube or graduated cylinder.
- 17.How does the pH of acid rain compare to the pH of distilled water?
- A.
The pH of acid rain is higher than that of distilled water.
- B.
The pH of acid rain is lower than that of distilled water.
- C.
There is no difference in pH since both are water.
- 18.
These white carnations changed color because
- A.
Flowers are generally polar in nature
- B.
They were able to convert the sun's energy to color
- C.
Water traveled up to the flowers through capillary action
Questions: 8 | Attempts: 2934 | Last updated: Mar 22, 2022
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