Properties of Water
Attraction of water molecules to themselves is called?
Cohesion
What kind of bonds cause water molecules to be attracted to each other?
Hydrogen bonds
What happens when liquid water freezes, and is it more or less dense than liquid water?
Water molecules spread out and align into a crystalline lattice structure, which is less dense than liquid water.
Which phase of water is the least dense?
Gas (Water Vapor)
What type of weathering creates rust, sinkholes, and caves?
Chemical weathering.
Attraction of water molecules to other polar substances is called?
What is Adhesion
Why is water called the universal solvent?
***DOUBLE JEOPARDY***
Because many things can be dissolved in water.
How many atoms are in a water molecule, and how many of each are there?
***DOUBLE JEOPARDY***
2 Hydrogen, 1 Oxygen.
How do we describe a molecule that has one end positively charged and the other end negatively charged?
A polar molecule.
What is physical or mechanical weathering?
The breaking down of rock into smaller pieces by the action of wind, water, and temperature change.
How does water travel up plants, and what 2 forces are responsible for this?
***DOUBLE JEOPARDY***
Capillary Action; cohesion and adhesion.
Which element in a water molecule has a slightly negative charge?
Oxygen.
What temperature in Celsius does water freeze?
0 Degrees.
What is erosion?
The process in which wind, water, ice or other things move pieces of rock and soil over Earth's surface.
Explain heat capacity as it pertains to climates?
Coastal regions experience milder seasonal shifts because nearby ocean water absorbs and releases heat slowly. Inland areas with dry soil or rock, that have much lower heat capacities, heat up and cool down quickly, creating harsher temperatures.
Name the 3 specific phases of water
ice
liquid water
water vapor
What do we call the substance that we dissolve in a solvent?
Solute.
What temperature in Celsius does water boil?
100 degrees.
Which is the independent variable and dependent variable: temperature of water, and the amount of sugar dissolved in the water?
***DOUBLE JEOPARDY***
Independent Variable: Temperature of the water
Dependent Variable: The amount of sugar dissolved
Why can a water bug walk on water?
Surface Tension
This is what you get when a solute is dissolved in a solvent.
A solution.
The change in water's phase from a gas to a liquid.
Condensation.
The majority of Earth's fresh water is found where?
***DOUBLE JEOPARDY***
In glaciers and ice caps.
Determine the independent and dependent variables used to test the following hypothesis:
If I use different types of paper to create paper airplanes of the same design, then the paper airplane made using cardstock will fly the farthest distance.
Dependent Variable: The distance the plane flies
Independent Variable: The type of paper