LAB 3: Measurements And The Physical Properties Flashcards
What does SI means
System international d’Unites
This is sometimes called the ‘mks’ system and the primary units
Meter, Kilograms, Seconds
The “cgs” System
Centimeters, grams, seconds
All of the unit relationships in the metric system are based on multiples of
10
Kelvin Formula
K = C + 273.15
degree Celsius Formula
C = F - 32 / 1.8
Degree Fahrenheit
F = 1.8 (C) + 32
1 inch = ____ centimeters
2.54
1 mile =___ kilometers
1.609
1.093 yard = meters
1
1 foot = __ inch
12
2.205 pounds = ____ kilograms
1
1 ton =___ kg
907.2
1 slug = ___ kg
14.594
refers to the fact that water sticks to itself very easily.
Cohesion
means that water also sticks very well to other things, which is why it spreads out in a thin film on certain surfaces, like glass
Adhesion
When water comes into contact with these surfaces, the adhesive forces are ____ than the cohesive forces. Instead of sticking together in a ball, it spreads out.
stronger
Water also has a high level of
surface tension
The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.
Surface Tension
means that the molecules on the surface of the water are not surrounded by similar molecules on all sides, so they’re being pulled only by cohesion from other molecules deep inside
Surface tension
is also a result of surface tension. As we mentioned, this happens in plants when they “suck up” water.
Capillary Action
when liquid flows through narrow spaces without external forces, such as gravity
Capillary Action
Water’s ___ are also why its solid form, ice, can float on its liquid form.
hydrogen bonds
Ice is less ___ than water because water molecules form crystalline structures at freezing (32 degrees Fahrenheit or 0 degrees Celsius) temperatures
dense