Fichas
Module 1
Fichas del conjunto (32)
- 1What is Chemistry?The study of matter – its nature, its structure
(relationship to atoms, ions and
molecules) properties, transformations,
and its interactions with energy - 2What is a Solid?definite shape and volume
- made of particles (atoms, molecules, or
ions) held close together and rigidly in
place
- reasonably well understood. - 3What is a Liquid?definite volume; indefinite/variable shape
-made of atoms, molecules, or ions; held
close together; they move relative to each
other
-fluid and may/may not fill a container
completely (able to flow)
- not well understood - 4What is a Gas?no definite V or shape
- takes shape and volume of takes shape and volume of
container container
- made of particles (atoms or made of particles (atoms or
molecules) separated from molecules) separated from
each other by large each other by large
distances; move very fast distances; move very fast
(high KE = ½ mv(high KE = ½ mv22))
- fluidfluid (able to flow) (able to flow)
- good theoretical good theoretical
understanding (PV = nRT) - 5What are physical properties of matter?characteristic of matter
that can be measured/
observed without
changing the basic
identity of the matter
e.g., state, size, mass, V,
color, odor, melting point
(Tm; mp) boiling point
(Tb; bp) density,
solubility... - 6What are chemical properties of matter?Ability to form something new [a chemical
reaction]
e.g., flammability, corrosiveness,
oxidizing-reducing (bleaching) power,
explosiveness,...
In order to observe any of the above, there must
be a chemical change (Chemical Reaction) - 7What is a physical change?transformation of matter from one state to
another (or size & shape) that does not
involve change in the identity of the matter
Examples: melting & freezing; boiling &
condensing; subliming & depositing;
dissolving (forming a solution), - 8What is a chemical change?transformation of one type of matter into a new
kind of matter (identity of matter changes).kind of matter (identity of matter changes).
examples: examples: rusting, burning (combustion),
formation of a precipitate, gas forming, acid-base
neutralization, displacement reactions; color
changing; heat absorbed/evolved - 9What is an intensive property?independent of the
amount of matter being considered
e.g., density, boiling point, specific heat
capacity; electrode potential - 10What is an extensive property?The value of an extensive property depends
on the amount of matter
e.g., mass (m), volume (V), pressure (P),
internal energy (E), enthalpy (H), entropy
(S) - 11What does kilo mean?1000
- 12What does milli mean0.001
- 13What is the si unit for lengthmeter (m)
- 14What is the si unit for masskilogram (kg)
- 15What is the si unit for timesecond (s)
- 16What is the si unit for tempaturekelvin (K)
- 17What is the si unit for amount of a substancemole (mol)
- 18What is the si unit for electric currentampere (A)
- 19What is the si unit for luminous intensitycandela (cd)
- 20What does tera stand for(T) 1000000000000
- 21What does giga stand for(G) 1000000000
- 22What does mega stand for(M) 1000000
- 23What does deci stand for(d) 0.1
- 24What does centi stand for(c) 0.01
- 25What does micro stand for(u) 0.000001
- 26what does nano stand for?(n) 0.000000001
- 27what does pico stand for(p) 0.000000000001
- 28What does femto stand for?(f) 0.000000000000001
- 29What are equalities?a) use two different units to describe the same
measured amount/value.
b) are written for relationships between different
units. - 30what is accuracy?nearness/closeness of the
measurement (average) to accepted
value of the quantity. - 31what is precision?reproducibility; how well
several determinations of the same
quantity agree. - 32what is tempature?is a measure of how is a measure of how hothot or or coldcold an an
object is compared to another object is compared to another
object.object.
is measured using a thermometeris measured using a thermometer
• Thermal energy flows from the
object with a higher (-)
temperature to the object with a
lower (+) temperature
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- Descripción
- GRE Chemistry Fichas sobre Module 1, creado por madison Benson el 01/03/2022.
- Creado por
- madison Benson
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