Chapter 2 Flashcards

1
Q

absorption

A

Occurs when a substance is taken up inside another.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

acid wash

A

Procedure in which glassware is soaked in 3-6 M HCl for >1 h (followed by rinsing well with distilled water and soaking in distilled water) to remove traces of cations adsorbed on the surface of the glass and to replace them with H+.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

adsorption

A

Occurs when a substance becomes attached to the surface of another substance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

ash-less filter paper

A

Specially treated paper that leaves a negligible residue after ignition. It is used for gravimetric analysis.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

buoyancy

A

Upward force exerted on an object in a liquid or gaseous fluid. An object weighed in air appears lighter than its actual mass by an amount equal to the mass of air that it displaces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

buret

A

A calibrated glass tube with a stopcock at the bottom. Used to deliver known volumes of liquid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

calibration

A

Process of relating the actual physical quantity(such as mass, volume, force, or electric current) to the quantity indicated on the scale of an instrument.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

desiccant

A

A drying agent.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

desiccator

A

A sealed chamber in which samples can be dried in the presence of a desiccant or by vacuum pumping or both.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

filtrate

A

Liquid that passes through a filter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

green chemistry

A

Principles intended to change our behavior in a manner that will help sustain the habitability of Earth. Green chemistry seeks to design chemical products and processes to reduce the use of resources and energy and the generation of hazardous waste.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

hygroscopic

A

Readily picks up water from the atmosphere.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ignition

A

The heating to high temperature of some gravimetric precipitates to convert them into a known, constant composition that can be weighed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

meniscus

A

Curved surface of a liquid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

mother liquor

A

Solution from which a substance has crystallized or precipitated.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

parallax

A

Apparent displacement of an object when the observer changes position. Occurs when the scale of an instrument is viewed from a position that is not perpendicular to the scale. The apparent reading is not the true reading.

17
Q

pipet

A

A glass tube calibrated to deliver a fixed or variable volume of liquid.

18
Q

slurry

A

A suspension of a solid in a solvent.

19
Q

tare

A

As a noun, tare is the mass of an empty vessel used to receive a substance to be weighed. As a verb, tare means setting the balance reading to 0 when an empty vessel or weighing paper is placed on the pan.

20
Q

volumetric flask

A

One having a tall, thin neck with a calibration mark. When the liquid level is at the calibration mark, the flask contains its specified volume of liquid at a specified temperature.