Chemistry

Front 1

2 main groups of science

Back 1

biological and physical

Front 2

biological science is concerned with?

Back 2

the study of living things
ex. botany, microbiology..

Front 3

physical science is concerned with?

Back 3

deals with natural relationships around us.
ex. physics, chemistry..

Front 4

name 3 types of chemistry

Back 4

organic- study of carbon compounds
inorganic- without carbon compounds
biochemistry- study of substances and processes occurring in living things.

Front 5

qualitative?

Back 5

collecting, analyzing, and interpreting data by observing what people do and say.

Front 6

quantitative?

Back 6

refers to counts and measures of things.

Front 7

state the 3 states of matter.

Back 7

solid liquid gas

Front 8

condensation

Back 8

gas to liquid

Front 9

boiling

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liquid to gas

Front 10

sublimation

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solid to gas

Front 11

physical properties

Back 11

depends on the substance itself.

Front 12

chemical properties

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depends on the action of substance, in the presence of another substance.

Front 13

extensive?

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depends on the amount of matter. ex. mass, length, volume

Front 14

intensive?

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does not depend on the amount of matter. ex. color, density, conductive, etc..

Front 15

what are three types of energy?

Back 15

mechanical, electrical, and heat

Front 16

name 2 types of mechanical energy and how they differ.

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potential- stored energy
kinetic- motion energy

Front 17

law of conservation of matter and energy.

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matter and energy and interchangeable
total amount of energy and matter in the universe is constant

Front 18

endothermic?

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a reaction that absorbs energy (cold)

Front 19

exothermic?

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a reaction that releases energy (hot)

Front 20

classifications of matter and how they differ

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mixture- combination of 2 or more substances that are not chemically combined.
pure substance- a sample of matter having a uniform and unchanging composition

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homogeneous?

Back 21

uniform throughout

Front 22

heterogeneous?

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not uniform throughout

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element?

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a substance that cannot be broken down by ordinary chemical means; a substance whose atoms all have the same number of protons.

Front 24

how many know elements?

Back 24

111

Front 25

how many naturally occurring elements

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92

Front 26

above # 92 are synthetic called what?

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transuranium elements

Front 27

transuranium?

Back 27

having a atomic number greater than 92

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give 3 classes of elements

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metals- Calcium Ca, Zinc Zn
metalloids- Boron B, Silicon Si
nonmetals- Carbon C, Argon Ar

Front 29

what are the 2 parts of a measurment

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number and scale (unit)

Front 30

what are the standard units for length, mass, and volume

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length- m metric ruler
mass- g balance
volume- L liters

Front 31

fahrenheit

Back 31

f= (c x 1.8)+ 32

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celsius

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c= f-32/ 1.8

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kelvin

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k= c + 273.15

Front 34

boiling point of h20

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f=212
c=100
k=373.15

Front 35

freezing point of h20

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f=32
c=0
k=273.15

Front 36

absolute zero?

Back 36

where all molecular motion stops.
0 on the kelvin scale.

Front 37

matter-

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anything that takes up space and has mass

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solid-

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a state of matter that has its own shape and volume

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liquid-

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a state of matter that takes the shape of its container but has a definite volume.

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gas-

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a state of matter characterized by no definite shape or volume.

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energy-

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the ability to do work

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siginificant figures-

Back 42

the numbers recorded in a measurement

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density-

Back 43

amount of mass per unit volume

Front 44

dimensional analysis-

Back 44

A technique that involves the study of dimensions of physical quantities.

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Ion-

Back 45

an atom or group of atoms having an electrical charge because of a loss or gain of electrons.

Front 46

Isotope-

Back 46

atoms of the same element that have different numbers of neutrons

Front 47

density-

Back 47

is also a property of matter that is often used as an identification tag for substances

Front 48

democritus?

Back 48

he said matter is composed of small indivisible particles called atoms.

Front 49

john dalton?

Back 49

the development of chemistry has been based on his atomic theory.

Front 50

atoms-

Back 50

the smallest particle of an element that retains the properties of the element.

Front 51

subatomic particles

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protrons, carries a + charge; found in the nucleus.
neutrons, carry no charge; found in the nucleus
electrons, carries a - charge; found outside the nucleus; has little or no mass

Front 52

nucleus

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also carries the mass of the atom

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atomic size-

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is measured in angstroms

Front 54

the identity of an element depends on what?

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on the number of protons in the nucleus of the atom. they call this the finger print of the atom.

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element-

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a substance that cannot be broken down by ordinary chemical means; also a substance whose atoms all have the same number of protons.

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atomic number-

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number of protons of an atom; always the whole number on the periodic table.

Front 57

atomic mass-

Back 57

weighted average of the isotopes of the atom; the decimal number on the periodic table.