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MATTER AND MEASUREMENTS Flashcards

(111 cards)

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1
Q

Define matter

A

Matter is defined as anything that occupies space and has mass

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2
Q

The universe is composed of ?

A

Matter and Energy

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3
Q

Are matter and energy interconvertible?

A

yes

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4
Q

Name the Greek thinker who first defined the atom?

A

Democritus

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5
Q

what is a molecule made up of?

A

a molecule is made up of one or more atoms of the same kind or different kind

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6
Q

A molecule made up of one atom is known as ____________.

A

MONOATOMIC MOLECULE

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7
Q

GIVE TWO EXAMPLES OF MONOATOMIC MOLECULES

A

NEON

ARGON

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8
Q

WHAT IS A MOLECULE THAT IS MADE UP OF TWO ATOMS REFERRED TO AS?

A

DIATOMIC MOLECULE

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9
Q

NAME THREE DIATOMIC MOLECULES

A

OXYGEN
NITROGEN
HYDROGEN

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10
Q

IF A MOLECULE IS MADE UP OF MORE THAN TWO ATOMS IT IS CALLED AS

A

POLYATOMIC MOLECULE

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11
Q

GIVE AN EXAMPLE OF A POLYATOMIC MOLECULE

A

water molecule

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12
Q

What are the four characteristics of a molecule?

A
  1. SMALL IN SIZE
  2. SPACES BETWEEN THEM
  3. RANDOM MOTION
  4. ALWAYS ATTRACT EACHOTHER
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13
Q

THE DIAMETER OF A WATER MOLECULE IS_________

A

1.45 X 10-10 meter

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14
Q

THE SPACING BETWEEN PARTICLES OF MATTER IS CALLED?

A

INTERMOLECULAR SPACE

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15
Q

THE PARTICLES OF MATTER ARE IN A RANDOM MOTION -WHAT PATH DO THEY TAKE?

A

ZIG -ZAG PATH

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16
Q

Particles of matter always attract other particles in the surroundings this force of attraction is known as?

A

INTERMOLECULAR FORCE

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17
Q

WHY IS IT EASIER TO MOVE THE HAND THROUGH WATER THAN THROUGH GLYCERINE?

A

THE MOLECULAR FORCES ARE MORE IN GLYCERINE THAN IN WATER

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18
Q

WHY IS IT EASY TO BREAK CHALK INTO PIECES BUT DIFFICULT TO BREAK A PIECE OF COAL?

A

THE INTERMOLECULAR FORCES ARE LESS IN CHALK AS COMPARED TO COAL

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19
Q

WHY IS IT EASY TO MOVE A BODY THROUGH AIR THAN IN WATER?

A

THE INTERMOLECULAR FORCES IN AIR ARE VERY LESS AS COMPARED TO WATER

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20
Q

IS THE FORCE OF ATTRACTION BETWEEN PARTICLES MORE IN SOLIDS THAN LIQUIDS?

A

YES

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21
Q

IS THE FORCE OF ATTRACTION BETWEEN LIQUID PARTICLES MORE THAN GASE0US PARTICLES

A

YES

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22
Q

WHAT IS FORCE OF COHESION?

A

THE FORCE OF ATTRACTION BETWEEN PARTICLES OF THE SAME

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23
Q

WHAT IS ADHESIVE FORCE?

WHAT IS FORCE F ADHESION?

A

THE FORCE OF ATTRACTION BETWEEN PARTICLES OF TWO DIFFERENT SUBSTANCES

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24
Q

WHAT IS A NANO PARTICLE?

A

A MOLECULE OR CLUSTER OF SEVERAL MOLECULES IS CALLED NANOPARTICLE

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25
WHAT IS AIR?
AIR IS A MIXTURE OF GASES
26
WHAT ARE THE THREE STATES OF WATER?
SOLID-Ice LIQUID- GAS-steam
27
Name the three properties that decide the state of a substance ?
1. intermolecular space 2. intermolecular force of attraction 3. movement of molecules
28
The value obtained on measuring a quantity is called?
MAGNITUDE
29
WHAT IS PHYSICAL QUANTITY?
A QUANTITY THAT CAN BE MEASURED
30
WHAT ARE THE FOUR BASIC PHYSICAL QUANTITIES?
LENGTH TIME MASS TEMPERATURE
31
THE SI UNIT OF LENGTH IS?
METRE
32
THE SI UNIT OF MASS IS?
KILOGRAM
33
THE SI UNIT OF TIME IS?
SECOND
34
THE SI UNIT OF TEMPERATURE IS?
KELVIN
35
SYMBOL FOR KILOGRAM?
Kg
36
SYMBOL FOR METRE
m
37
SYMBOL FOR SECOND
s
38
THE UNIT OF CURRENT IS?
Ampere
39
WHAT IS MEANT BY LENGTH?
THE DISTANCE BETWEEN TWO POINTS.
40
DEFINE A METER?
DISTANCE TRAVELLED BY LIGHT IN
41
LONG LENGTHS ARE EXPRESSED AS?
KILOMETRE
42
SHORT LENGTHS ARE EXPRESSED AS ?
CENTIMETRE OR MILLIMETRE
43
THE SYMBOL FOR KILOMETRE IS\_\_\_\_\_\_\_\_
km
44
THE SYMBOL FOR CENTIMETRE IS\_\_\_\_\_\_\_\_\_\_\_\_
cm
45
THE SYMBOL FOR MILLIMETRE IS\_\_\_\_\_\_\_\_\_\_\_\_\_\_
mm
46
IN THE PAST THE THREE MEASURING SYSTEMS WERE?
C.G.S SYSTEM M.K.S SYSTEM F.P.S SYSTEM
47
IN THE F.P.S SYSTEM THE UNIT OF LENGTH IS?
FOOT
48
THE SMALLER UNIT OF FOOT IS?
INCH
49
THE BIGGER UNIT OF FOOT IS ?
YARD
50
CONVERT FOOT TO INCHES
1 FOOT =12 INCHES
51
CONVERT YARD TO FOOT
1 YARD=3 FEET
52
THE SYMBOL OF FOOT IS ?
ft
53
THE SYMBOL OF YARD IS\_\_\_\_\_\_\_\_\_\_\_\_\_
yd
54
CONVERT INCH TO cms
1 inch ~2.54 cms
55
A metre ruler can measure lengths upto?
1mm
56
Name the instruments used to measure lengths less than 1mm
VERNIER CALLIPERS SCREW GAUGE
57
VERNIER CALLIPERS CAN MEASURE LENGTH UPTO?
0.1 mm
58
A SCREW GAUGE CAN MEASURE LENGTH UPTO?
0.01mm
59
What is the mass of a body?
The quantity of matter contained in it
60
The bigger unit of mass is?
QUINTAL
61
THE UNIT OF MASS BIGGER THAN QUINTAL IS\_\_\_\_\_\_\_\_\_\_\_\_\_\_
METRE TONNE
62
CONVERT QUINTAL TO KILOGRAMS
1 QUINTAL=100 kg
63
CONVERT METRIC TONNE TO QUINTAL
1 METRIC=10 QUINTAL TONNE
64
1 DECAMETRE IS EQUAL TO HOW MANY METRES?
10 METRES
65
I HECTAMETRE IS EQUAL TO HOW MANY METRES?
100 METRES
66
IN THE F.P.S SYSTEM THE UNIT OF MASS IS?
POUND
67
CONVERT POUNDS TO GRAMS
1 POUND =453.59 gm
68
Name four devices used for measuring mass
BEAM BALANCE ELECTRONIC BALANCE GROCERS BALANCE PHYSICAL BALANCE
69
GOLDSMITHS REQUIRE AN ACCURATE AND SENSITIVE BALANCE .WHICH ONE DO THEY USE?
PHYSICAL BALANCE
70
WHAT IS TIME?
THE INTERVAL BETWEEN TWO INSTANCES OR EVENTS
71
WHAT IS “SOLAR DAY”?
THE TIME TAKEN BY EARTH TO COMPLETE ONE ROTATION ABOUT ITS OWN AXIS.
72
THE HOTNESS OR COOLNESS OF AN OBJECT DEPENDS ON\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
THE DIRECTION OF THE FLOW OF HEAT
73
HOW DOES HEAT ALWAYS FLOW?
FROM HIGH TEMPERATURE TO LOW TEMPERATURE
74
IF WE TOUCH AN OBJECT IT APPEARS TO BE HOT,HOW DOES THE HEAT FLOW ?
FROM THE OBJECT TO OUR HANDS
75
IF WE TOUCH AN OBJECT AND IT FEELS COLD .HOW DOES THE HEAT MOVE?
FROM OUR HANDS TO THE OBJECT
76
WHAT IS TEMPERATURE?
IT IS THE MEASURE OF DEGREES OF HOTNESS OR COLDNESS OF AN OBJECT
77
WHAT IS THE SYMBOL OF KELVIN?
CAPITAL K
78
APART FROM KELVIN WHICH ARE THE OTHER TWO COMMONLY USED UNITS FOR TEMPERATURE?
CENTIGRAD o C FAHRENHEIT o F
79
The Fahrenheit unit is named after which scientist?
GABRIEL DANIEL FAHRENHEIT
80
THE CENTIGRADE UNIT IS NAMED AFTER WHICH SCIENTIST?
ANDREWS CELCIUS
81
WHAT IS ICE POINT
FREEZING POINT OF WATER
82
WHAT IS STEAM POINT
BOILING POINT OF WATER
83
THE CENTIGRADE SCALE IS ALSO KNOWN AS?
CELSIUS SCALE 0 0 C
84
THE BOILING POINT OF WATER ON THE CELCIUS SCALE?
100 o C
85
Is one degree on the Kelvin Scale equal to one degree on the Celcius scale? TRUE/FALSE
TRUE
86
ONE DEGREE ON THE CELCUS SCALE IS EQUAL TO __________ DEGREES ON THE FARENHEIT SCALE
1.8 o F
87
THE LABORATORY THERMOMETER HAS 3 PARTS NAME THEM
BULB STEM CAPILLARY TUBE
88
THE BULB OF A THERMOMETER IS FILLED WITH\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.
MERCURY
89
THE LABORATORY THERMOMETER ,HAS MARKINGS FROM?
-10 o C to 110 o C
90
the ice point on the fahrenheit scale is\_\_\_\_\_\_\_\_\_\_
32 o F
91
Steam point on a Farenheit scale is?
212 o F
92
Doctors use a special thermometer called \_\_\_\_\_\_\_\_\_\_\_\_\_\_
clinical thermometer
93
the clinical thermometers have a small bend in the stem ,just above the bulb .this bend is called\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
constriction
94
why do clinical thermometers have a constriction?
to prevent the mercury from dropping back to the bulb when the reading is being taken
95
What is the normal temperature of the human body?
37 o C OR 98.6 o F
96
the markings on a clinical thermometer are from\_\_\_\_\_\_\_\_\_\_
35 o C to 42 o C OR 95 o F to 110 o F
97
Nowadays instead of mercury thermometres what other thermometers are used to measure body temperature?
DIGITAL THERMOMETERS
98
CAN A CLINICAL THERMOMETRE BE USED TO MEASURE BOILING WATER?
NO AS CLINICAL THERMOMETERS CAN MEASURE ONLY UPTO 42 oC
99
WHAT ARE FUNDAMENTAL QUANTITIES?
QUANTITIES LIKE LENGTH, MASS, TIME AND TEMPERATURE ARE INDEPENDENT OF EACHOTHER AND ARE KNOWN AS FUNDAMENTAL QUANTITIES
100
WHAT ARE DERIVED QUANTITIES?
QUANTITIES LIKE VOLUME,AREA AND SPEED DEPEND ON FUNDAMENTAL QUANTITIES ARE KNOWN AS DERIVED QUANTITIES
101
WHAT IS THE FORMULA FOR AREA?
Area=length X breadth
102
what is the formula for volume
Volume=length x breadth x height
103
what is the formula for speed?
speed = _distance_ time
104
What is Area?
the surface occupied by an object is called area
105
Formula for area of a rectangle?
l x b
106
Formula for area of a square
l x l
107
formula for area of triangle
Area of triangle= ½ x l x h
108
formula for area of circle
Area of circle=
109
what is the value of (pi)
3.14
110
1 are is equal to?
100 m 2
111
1 hectare is equal to?
10000 m2

PHYSICS-middle school (2 decks)

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