lab final

When two unlike substances stick together

Adhesion

When two of the same substance sticks together

cohesion

An "error" of perspective is called

parallax error.

if the mass is halved, the period of oscillation remains…

The same

For such a "simple pendulum," if the amplitude is quadrupled, the period of oscillation remains…

The same

If the acceleration due to gravity were doubled, then the mass of any object is….

Unchanged

When the length of a "simple pendulum" is quadrupled, its period of oscillation is then changed by…

Factor on 2

Gay lussac law

describes a relationship between pressure & temperature at constant volume.

Gay-Lussac's Law describes the relationship between

Pressure & temperature at constant volume

All atoms are electrically

Neutral

Deevices used for realizing a high voltage – one used a moving belt; the other was cranked by hand.

Van de Graaff generator and Wimshurst machine.

An example of a polar molecule is…

water (H_2O).

apparatus, used to separate out the H_2 and O_2 gases from water

Electrolysis

Atoms are mostly empty space.

True

Distilled water is a good conductor of electricity.

False

Dissolved NaCl is a good conductor of electricity.

True

The equation used in Lab to calculate the focal length of a lens is called…

Thin lens equation

When the object distance is equal to the focal length, then the image was

At the position infinity

When the object is placed "infinitely far away" from the lens, then the image is formed at…

The focal point/focal length

Another name for a negative lens is

Diverging lens

When the object distance is quadrupled, then the focal length…

Stays the same

What type of liquid displays the Tyndall effect?

Colloidal suspension

What term describes a solution that is in equilibrium with undissolved solute?

Saturated

Solutions are always comprised of liquids.

False

The test for starch is

Iodine

The test for Ba^{+2} ions is

Sulfuric acid

Boyles law

Constant temperature, inversely proportional

Charles law

Constant pressure, directly proportional

Gay lussac law

Constant volume, directly proportional

cantidad de calor necesaria para elevar la temperatura de 1 gramo de agua en 1 grado Celsius

Caloría

Is destiled water a good conductor

No

Is tap water a good conductor

Is a weak conductor

Is salt and water solution a good conductor

Yes

Which type is the most common in our home, DC or AC?

Alternate Current

Convex lens

Thicker at the center than at its edge

Concave lens

Thicker at its edge than at its center

Convex lens

is called a converging lens, or positive lens, the converging lens is thicker at its center than at its edge.

Concave lens

diverging lens, or a negative lens, the diverging lens is thicker at its edge than at its center.

Image of the source

Light rays from a point source (object) passing through a lens emerge convergent to a point

or divergent from a point.

Real

When the emergent rays converge to a point.

Virtual

When the emergent rays diverge from a point, the image is called…