1
2
3
4
5
100
The bond holding one water molecule together
Covalent bonds
100
What is water made of? And what is the charge of each
Hydrogen (+) and Oxygen (-)
100
Humans are _____% water
70
100
The substance being dissolved
Solute
100
The substance doing the dissolving
Solvent
200
The bond holding one water molecule to another
Hydrogen bonds
200
What is cohesion?
Water molecules sticking to each other using hydrogen bonds
200
What is adhesion?
Water molecules sticking to other things
200
A combination of two elements
A mixture
200
What is specific heat?
The amount of heat energy needed to raise the temperature of a substance
300
Uneven distribution of charges across a molecule
Polarity
300
What does cohesion cause?
Surface tension
300
What does adhesion cause?
Capillary action
300
Water is known as the _____________
Universal solvent
300
What is density?
How tightly packed atoms are
400
What happens to water molecules as the temperature DECREASES? How does the effect the density?
Hydrogen bonds expand which creates ice. This causes the ice to have a lower density
400
How does water’s high specific heat affect aquatic ecosystems?
Allows them to keep a stable environment (water temp will be lower than on land)
400
How does water’s density affect aquatic ecosystems?
During the winter ice freezes the top, insulating the bottom and allowing organisms to survive the winter. Ice has a lower density then liquid water
400
Why is water such a good solvent?
Both positive and negative charges to attract and pull molecules apart
400
What property allows water to go from the roots to the leaves of plant?
Capillary action (the combination of cohesion and adhesion)
500
In order for water to increase in temperature, what must happen?
Hydrogen bonds must break
500
Why is perspiration important?
Sweat gathers and releases heat energy as it evaporates
500
What is this symbol and what does it mean?
Delta and it means “partial” or “kinda”
500
Draw a water molecule
500
What type of molecule is water unable to dissolve?
Non-polar molecules