basic Flashcards

1
Q

drugs effective against cancer

A

cisplatin and taxol

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2
Q

drugs that help AIDS patients

A

AZT (azidothymidine)

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3
Q

responsible for ozone depletion

A

CFS chloroflurocarbons

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4
Q

separation methods of heterogeneous mixture

A

filtration, crystallisation, distillation, handpicking

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5
Q

how is the representation of quantitative measurement of physical quantities

A

with a number followed by unit

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6
Q

state the two systems that earlier existed

A

English system and Metric system

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7
Q

give some info about the metric system

A

It originated in France in the 18th century.
it was more convenient than the English system
it was established in 1960

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8
Q

who established the international system of units

A

by the 11th general conference of weights and measures (CGPM)

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9
Q

who created CGPM

A

by the metre convention ( intergovernmental treaty)

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10
Q

si unit of mass

A

kg

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11
Q

is litre si unit of volume

A

no, it is the unit used to measure volume, si unit is m^3

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12
Q

the cgs unit of volume

A

cm/dm

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13
Q

1 L is how much ml

A

1000ml

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14
Q

1000cm cube in decimetre

A

1dm

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15
Q

what container/ apparatus is used to measure the volume of the substance

A

volumetric flask

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16
Q

what is density?

A

it tells us how closely or far away the particles in a particular state of matter are.
if it’s given that the density is high that means
the particles are tightly packed to one another

17
Q

The si unit of temperature

A

Kelvin

18
Q

three scales to measure temperature

A

celsius, Fahrenheit, and kelvin

19
Q

the scales of Celsius and Fahrenheit

A

0 to 100 for Celsius and 32 to 212 for Fahrenheit

20
Q

what is density (formula) and si and cgs unit of density

A

density = mass/ vol, si = kgm^-3 and cgs is gcm^-3