Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 1: Scientific method and measurement
Exercises
1.- Express these quantities in SI units:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Earth radius: 6,37 Mm
Volume of a drop of water: 0,05 ml
Mass of an ant: 0,5 mg
2
Spain area: 504000 km
Madrid area: 60800 ha
Liver cell: 200 µm
Radius of Hydrogen atom: 5 nm
Energy of LHC collisions: 4,5 Tev
Internet connection: 180 Gbytes/h
3
Density of aluminium: 2,7 g/cm
Speed of light: 1080 Gm/h
Formula 1 speed record: 413 km/h
Speed limit UK: 70 miles/h
Water viscosity: 1 g/cm.s
2
Madrid annual rainfall: 420 l/m
(m)
3
(m )
(kg)
2
(m )
2
(m )
(m)
(m)
(eV)
(bytes/s)
3
(kg/m )
(m/s)
(m/s)
(m/s)
(kg/m.s)
(m)
2.- Convert these quantities using the units in brackets
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
3
13 g/cm
5700 cm
3
750 cm
0,00064 kg.m/s
9500 cg
83 t/h
18 µm
3
43 m /h
0,0057 km
82 MHertz
2
32 m
0,06 litros
2
0,0002 g/cm
25 m/s
2
12 t/m
3
(kg/m )
(km)
3
(m )
(g.cm/s)
(kg)
(kg/s)
(m)
3
(cm /s)
(cm)
(Hertz)
2
(cm )
(ml)
2
(kg/m )
(km/h)
2
(kg/cm )
3.- Find the correct value with the suitable number of significant figures
1.
2.
3.
4.
5.
Volume of a room which has 4,52 m x 5,75 x 2,55 m
Total mass of three books which have 2520 g, 2675 g, 1530 g
3
Density of a steel esphere 35,5 g and 4,5 cm
Speed of a car which travels 85500 m in 45 minutes
Area of a sheet of paper which has 295 mm x 210 mm
4.- Express these quantities with scientific notation
1.
2.
3.
4.
5.
Earth-Sun distance: 1496000000 m
Proton radius: 0,000000000000001 m
Electron charge: 0,00000000000000000016 C
Universe age: 13700000000 years
Earth mass: 5980000000000000000000000 kg
© Patricio Gómez Lesarri Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 2: Matter and kinetic theory
Exercises
1.- A pond is 8 metres long, 4 metres wide and 50 cm deep. When we pour alcohol in it,
the pond contains 12.6 tons of liquid. Find the density of alcohol. How much water can we pour
3
in it?. How much mercury? Densities (g / cm ): water: 1; mercury: 13,6
-3
Sol: 788 kg.m ; 16 tons; 218 tons
2.- The sides of a room are 8 and 5 metres and its height is 3,5 metres Find the mass of
air contained in this room, if density of air is 1.3 g / l. Find the volumes of water and mercury
3
with the same mass.
Densities (g / cm ): water: 1; mercury: 13,6
Sol: 182 kg; 140 tons; 1904 tons
3.- A cardboard box is 50 cm high and its sides are 1 metre long. Find the density of
alcohol, if the mass of the box filled with alcohol is 395 kg. Find the mass of the air contained in
3
-3
this box supposing that the density of air is 0.0013 g/cm
Sol:790 kg.m ; 4.- A glass bottle of 75 cl is filled with alcohol. Find the mass of alcohol, if the density of
alcohol is 0.75 g/ml. Find the volume occupied by the same amount of mass of carbon dioxide
3
3
or mercury . Densities: Carbon dioxide: 2 g / l; mercury: 13.6 g/cm Sol: 592 g; 296 l; 43.5 cm
5.- We have filled a balloon with half a litre of air at 25º C. Then we place this balloon on
a heater. Find the volume of the balloon at 35º, 50º and 65º C Sol: 517, 542 & 567 ml
6.- Imagine a syringe filled with 50 ml of nitrogen at 1 at. Find the pressure of the
nitrogen contained in the syringe when we reduce the volume to 35 ml and 15 ml
Sol: 1.43 at; 3.3 at
7.- A pressure cooker can work at the pressure of 1.1 or 1.2 at. Find the temperature of
the water vapour contained in the pressure cooker when we heat a meal at these pressures
Sol: 137º C; 174 º C
8.- We fill a tyre with air getting a pressure of 2.23 atmospheres at 25º C. Then the car
starts to move and the tyres become hot. Find the pressure of the tyres at 50º C and 75º C
Sol: 2,41 at; 2,6 at
9.- A 1000 litre-balloon is filled with helium at room temperature (25º C) and 1 at. Then it
rises up and arrives to 36000 m high. Find the volume of the balloon:
a) at 10000 m high, where pressure is 0,2 at and temperature is – 20º C
b) at 40000 m high, where pressure is 0,01 at and temperature is - 60º C
c) at 60000 m high, where pressure is 0,001 and temperature is 10º C
10.- A bubble of air rises up from a submarine which is placed at 500 m of depth.
3
Calculate its volume when it reaches to the surface of the sea at 15º C and 1 at, if it had 1 cm
of volume at 7 at of pressure and 10º C
11. Plot the heating graph of ethanol from 200 K to 400 K. Melting point of alcohol is
and its boiling point is 79 º C
© Patricio Gómez Lesarri Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 3: Mixtures & solutions
Exercises
1.- A commercial disinfectant is a solution prepared solving 3 g of hydrogen peroxide in
99 g of water. Find its concentration expressed in grams per litre. The density of the solution is
-3
1010 g.cm
2.- A standard hydrochloric solution is 35 % and its density is 1,19 g/ ml. Calculate its
concentration expressed in grams per litre. How many mililitres of solution do you need to get
15 grams of hydrochloric acid?
3.- A standard solution of nitric acid is 69 % and its density is 1,41 grams per mililitre.
Calculate its concentration expressed in grams per liter. How many mililitres do you need to get
60 grams of nitric acid. Calculate the mass of nitric acid in 100 mililitres of solution.
4.- We solve 15 g of sugar in 60 g water, getting a solution volume equal to 65 ml.
Calculate the concentration of the solution expressed in mass percentage and grams per litre.
Find the solution density. Calculate the mass of sugar found in 15 ml of solution. What is the
volume of solution which contains 2 g of sugar?
5.- A solution of alt in water has 30 grams of salt per litre. Calculate tha amount of salt
contained in a 200 cubic centimetre glass of solution. How many millilitres of solution do we
need to get half a kilogram of salt?
© Patricio Gómez Lesarri Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 5: Inorganic Nomenclature
1.-­‐ Write the formula or give the name of the following halides or hydrides:
a) Aluminium chloride
k) PBr5
b) Calcium fluoride
l) CCl4
c) Rubidium bromide
m) HF
d) Mercury (II) hydride
n) NH3
e) Tin (II) iodide
o) CoI2
f) Ammonium chloride
p) MgF2
g) Palladium (IV) iodide
q) PtBr4
h) Antimony pentabromide
r) FeH2
i) Silane
s) KCl
j) Sulphur hexafluoride
t) CdI2
2.-­‐ Write the formula or give the name of the following oxides or sulphides:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Diboron trioxide
Diphosphorus pentasulphide
Diantimony trioxide
Selenium dioxide
Carbon monoxide
Titanium (IV) oxide
Strontium oxide
Ammonium sulphide
Potassium selenide
Magnesium telluride
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
As2O5
Cl2O7
TeO3
SiO2
N 2O 4
BaO
Rb2O
CrO3
MnO2
Pb3O4
3.-­‐ Write the formula or give the name of the following ternary substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
Beryllium hydroxide
Nitric acid
Lithium chlorate
Tin (II) hydroxide
Sodium hypochlorite
Silver carbonate
Calcium phosphate
Barium hydroxide
Ammonium perchlorate
Nitrous acid
ZnSO4
Co(OH)3
H2SO2
KClO2
Pt(OH)4
Na3PO4
HgClO3
H2CO3
CuOH
(NH4)2SO3
© Patricio Gómez Lesarri Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 5: Inorganic Nomenclature
4.- Write the formula or give the name of the following chemical substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Potassium fluoride
Nickel (II) oxide
Silver nitrate
Sulphur trioxide
Barium hydroxide
Caesium hydride
Aluminium hydroxide
Hydroiodic acid
Rubidium sulphide
Diarsenic trioxide
k) FeO
l) HgCl2
m) PF3
n) N2O5
o) MgBr2
p) Cu(OH)2
q) SiH4
r) B(OH)3
s) NH3
t) HClO
5.- Write the formula of these chemical substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Beryllium chloride
Lithium oxide
Magnesium hydride
Boron trifluoride
Tin (II) hydroxide
Clorous acid
Sodium carbonate
Iron (II) sulphate
Lead (IV) oxide
Mercury dibromide
k) Rubidium iodide
l) Sulphur hexafluoride
m) Potassium perclorate
n) Zinc oxide
o) Platinum tetrachloride
p) Nitric acid
q) Silver oxide
r) Estibina
s) Calcium hydroxide
t) Hydrocloric acid
6.- Give the name of the following chemical substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
PH3
CoO
SrH2
CF4
Pt(OH)2
H2SO2
NaNO2
Ca(ClO3)2
AgI
PdO2
Al(OH)3
BaBr2
HlO4
Au2O
CdCl2
H 2S
MgCO3
N 2O 4
CuI2
H 2O 2
© Patricio Gómez Lesarri Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 5: Inorganic Nomenclature
7.-­‐ Write the formula of the following chemical substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Calcium chloride
Potassium sulphate
Copper (II) hydride
Boron trifluoride
Lead (II) hydroxide
Hydrofluoric acid
Iron (II) sulphide
Tin (IV) oxide
Nitric acid
Rubidium iodide
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
Sodium carbonate
Barium hydroxide
Cadmium oxide
Nickel trichloride
Mercury (II) hydride
Silver phosphate
Diarsenic pentaoxide
Gold (III ) iodide
Hydrogen peroxide
Platinum tetrabromide
8.- Give the name of the following chemical substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
NH3
CoO
SrH2
Cs2SO4
Pt(OH)2
PF3
Ca(NO2)2
AgI
PdO2
B(OH)3
BaBr2
HClO4
Au2O
CdCl2
RbH
SeO3
SbCl5
SnO
HI
BeO2
9.-­‐ Write the formula or give the name of the following chemical substances:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
Calcium sulphate
Boron trifluoride
Lead (II) hydroxide
Hydrosulphuric acid
Iron (III) oxide
Nitric acid
Palladium monoxide
Mercury (II) hydride
Diantimony trioxide
Sodium peroxide
k)
l)
m)
n)
o)
p)
q)
r)
s)
t)
© Patricio Gómez Lesarri NH3
SeO3
SrH2
Pt(OH)2
PF3
AgNO3
HClO4
CdCl2
CoS
BeO2
Instituto de Educación Secundaria
“Ramiro de Maeztu”
C/ Serrano 127
Madrid 28006
Physics & Chemistry 3 ESO
Unit 5: Inorganic Nomenclature
10.- Write the formula or give the name of the following chemical substances:
a)
b)
c)
d)
e)
FeO
CuH
AgCl
HNO2
CaSO3
f)
g)
h)
i)
j)
Lead (IV) oxide
Phosphorus trifluoride
Aluminium bromide
Carbonic acid
Potassium perchlorate
11.- Fill the table :
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
FORMULA
CF4
CoO
SrH2
NH3
Pt(OH)2
AgI
SO2
H2Se
Au2O
SbCl5
Covalent substances
Common name / Stock
-
Óxido de potasio
Hidruro de sodio
Trifluoruro de boro
Hidróxido de plomo (II)
Fluoruro de hidrógeno
Sulfuro de hierro (III
Óxido de estaño (IV)
Dibromuro de mercurio
Yoduro de rubidio
Hexafluoruro de azufre
12.- Write the formula or give the name of the following substances:
© Patricio Gómez Lesarri