Properties of Water

Structure of Water

100

the chemical structure of water

H₂O

200

How many hydrogen atoms are in a water molecule? 

There are 2

300

What is a molecule that has "electrically" charged areas?

Polar molecule 

400

What is the charge on the oxygen in a water molecule?

Negative charge

500

What is the difference between cohesion & adhesion?

cohesion: an attraction between molecules of the same substance

adhesion: a force of attraction between different kinds of molecules

Properties of Water

100

Give an example of surface tension. 

Allows water gliders to walk on water

200

What allows water to dissolve many substances? 

Universal solvent

300

Water rising in a tube is an example of what property? 

Capillary action

400

Why does water to itself?

B/c of hydrogen bonding

500

If water will not dissolve a particular substance, what is it?

Non-polar

Bonding

100

What is the sharing of electrons?

a covalent bond

200

What is the transferring of electrons?

an ionic bond

300

What is the unequal sharing of electrons?

A polar covalent bond

400

What is a weak bond formed between water molecules?

A hydrogen bond

500

What type of bond is formed when 2 hydrogen atoms and 1 oxygen atom joins together?

A covalent bond

Atomic Structure

100

Three subatomic 

Protons, neutrons, and electrons

200

Located outside of the nucleus and have a negative charge.

Electrons

300

Located inside of the nucleus and have a positive charge.

Protons

400

The sum of the protons and neutrons

Atomic Mass

500

The number of protons in an atom of a certain element.

Atomic Number

Misc

100

Why can water dissolve many substances because of its characteristic?

Because it's a polar compound

200

T/F Water doesn't need a lot of heat to increase its temperature

False; it does

300

A substance that dissolves another substance

A solvent

400

What is the mixture that is formed when one substance dissolves another?

Solution

500

An atom has an atomic number of 50 and atomic mass of 125. How many electrons does it contain?

50 electrons