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Unit 11. Worksheet III
D
Mark with a ‘yes’ or ‘no’ the measurements expressed in S.I.:E
Are the following sentences TRUE (T) or FALSE (F):I. Length can be measured in metres; although in the S.I. we must use kilometres.
II. The volume of a body can be measured in metres.
III. An hour is 3,600 s.
IV. The mass of a body can be expressed in kilos.
V. To go from m2 to km2 we must divide the corresponding number by a million.
VI. The measurement 60 m3 can express the surface that a body occupies.
F
Complete the following chart:MAGNITUDE MEASUREDVALUE YES/NO
Mass of a car 1,500 kg I.
Temperature of the Sun 5,600 °C II.
Surface of an orchard 6 hm2 III.
Period of the Earth´s
rotation 24 h IV.
Formula 1 speed 310 km/h V.
Density of water 1,000 g/dm3 VI.
PREFIX SYMBOL EQUIVALENCE
1 000 000
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Worksheet IV
11
A
Look at the measurement instruments in the photos. Write down the name of each of them and the magnitude each measures.B
Fill in the blanks in the following sentences:I. Surface is the ……… ………. which expresses the extension of a body in two ……….. . In the S.I. we measure it in ……… metres.
II. The physical magnitude that expresses the extension of a body in three dimensions is called ………. . In the S.I. it is measured in ……….. ……….. .
III. The maximum volume a specific container can have is called ………., and it is measured in litres, L or millilitres, ml. The equivalence between the volume unit of the S.I. and the litre is: 1 …...… = …...…. L.
IV. To determine the density of a litre in the lab we measure its mass with ………., and the volume it occupies with a ……… ……….. . STUDY OF SOME PROPERTIES OF MATTER (I)
MEASUREMENTINSTRUMENT MAGNITUDEMEASURED
157
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Unit 11. Worksheet IV
C
Explain the difference between mass and weight....
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D
The chart shows the densities of several metals:In the lab we have discovered that 25 g of a metal displaces an approximate volume of 3.18 cm3 in a test tube with water. What metal is it?
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...
E
We have two bodies, A and B, with the same volume; but the mass of body A is double the mass of B. Which one is denser? Why?...
...
METAL LEAD IRON MANGANESE
DENSITY
(kg/m3) 11,340 7,874 7,470
UNIT
11
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Worksheet V
11
A
Read the text carefully and answer the following questions:“We live in a three dimensional space, where all the bodies occupy a certain dimension.
If we want to know their lineal extension, we measure their length; to know their extension in two dimensions, we measure their surface and in three dimension, their volume. The maximum volume a specific container can hold is called capacity, which we usually measure in litres, L. Besides, as all bodies have a certain mass we define a new physical magnitude, density, which is a specific property of matter.”
I. What is the text about? Write down the most important information.
...
...
...
II. Explain the difference between volume and capacity and state two units of each of these two magnitudes. ...
...
III. Express in S.I. units the density of a body whose value is 1g/cm3.
...
...
IV. Work out the number of litres of water a swimming pool can hold if the pool has the following dimensions: 20m long by 8m wide and 1.5 metres deep.
...
...
B
Match with arrows each magnitude on the left to its most appropriate measurement instrument on the right:STUDY OF SOME PROPERTIES OF MATTER (II)
MASS
METRICTAPEMEASURE
159
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Unit 11. Worksheet V
C
Complete the following text, which describes an experiment in the lab, where several words and several quantities are missing. Once you have read the text, can you give it a title?Choose among the following words: rigidity, particles, density, test tube, scales, chronometer, and tape measure. (Calculate the mass and density of the liquid.)
The measurement of the ………….. of an unknown liquid can help us determine what its density is. To do this we measure the mass of an empty test tube with the …………, and the result is 235g. Next, we add 20cm3 of the liquid, and we measure the mass of the …….. …………with the liquid again, and this time the result is 250 g. Therefore the liquid has a mass of …………. ………., and its density expressed in S.I. units is ……….. kg/m3.
• The title of the experiment could be:
………...………..
D
Two identical cubic pieces, one made of wood and the other made of iron, have the following dimensions: 45cm x 30cm x 20cm. We measure the mass of both of them and we find 14.3kg for the wood piece and 212.5kg for the iron piece.I. Without making any calculations, write down which of the two materials is denser:
wood or iron. Explain your answer.
...
...
...
II. What is the relationship between the density of iron and the density of wood. Bear in mind that a relationship is a division, in this case, the division between the density of iron and that of wood.
...
...
III. Imagine both pieces were hollow. In which of them could we pour more water?
Why? How many litres of water could we put inside them?
...
UNIT
12
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Worksheet I
12
A
Complete the text using the following words: particles, heat, rigidity, strongly.The main characteristic we can see in a solid is its ………….. . This happens because the ……… which make it up are ………. connected, but a solid can become a liquid if we supply enough ……...….. .
B
Complete the following table in which we state the characteristics of solids, liquids and gases. You should state whether they are rigid or not, and whether they have their own shape and volume or they adopt those of the container, with a ‘yes’ or ‘no’.C
Complete the following diagram. Write down above each figure the state of aggregation of the substance.CHARACTERISTICS OF THE STATES OF MATTER
I. II. III.
PHYSICALSTATE RIGIDITY OWNSHAPE OWNVOLUME
I. Solid
II. Liquid
III. Gas
161
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Worksheet II
UNIT
12
CHANGES OF STATE OF MATTER
A
Cross out the incorrect word in each of the underlined paired words or phrases. Then, explain why you have chosen one option or the other:I. Temperature is an extensive/intensive magnitude
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II. Changes of state are reversible/irreversible.
...
...
...
III. The change from solid to liquid is called fusion/vaporisation.
...
...
...
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IV. During a change of state the temperature changes/does not change.
...
...
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B
The figure shows an incomplete diagram. You should write down the three states of aggregation of matter in our environment (one in each blank space), and the name of a corresponding change of state.C
Find seven words related to temperature, the states of aggregation of matter, and the changes of state in the following word puzzle:K A C I T U F R N T
G E A S A G U E N H
C A L O E S S F O E
O C O V H A M U I R
L E O D I L O S C M
B O I L I N G I I A
D N A I D E M O L L
O D I Q I L U N U R
N O I C I L L U B E
D J T N M K M R O T
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163
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Worksheet III
UNIT
12
A
Complete the following text:Temperature is a physical magnitude which we associate with the ………….. level of a body. In the S.I. it is measured in …………., whose symbol is …. . Nevertheless, in daily life we use other units, for example, the ……….. ……… , whose symbol is …. .
B
The outside temperature of a house in the mountains is –25°. In which state of aggregation would the antifreeze for cars be, if its fusion temperature is –12 °C?...
C
As you know, when two bodies are in contact and each of them has a different temperature, the hottest body transfers heat to the coldest. We know that the equivalence between the Kelvin scale and Celsius or centigrade scale is t (°C) = T (k) – 273. Write down which of the two arrows shows the correct transference of heat from one body to the other. Explain your answer....
D
The figure shows a body before and after heating it. Write down the word “before” or“after” in the blank space on top of the appropriate drawing and explain why.
TEMPERATURE AND THE STATES OF MATTER
A: 25°C B: 280 K
UNIT
12
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Worksheet IV
12
ATOMS, MOLECULES, ELEMENTS AND COMPOUNDS
A
Match with an arrow each word on the left to the corresponding statement on the right:B
Complete the following diagram:Diamond Argon Oxygen
are classified into
for example for example for example
THEELEMENTS
I. ATOM
III. MOLECULARCOMPOUND
II. MOLECULARELEMENT
IV. CHEMICALREACTION
1. A substance made up of molecules with different atoms.
3. The process by which two or more atoms join together to form a molecule.
2. The simplest particle that makes up matter.
4. The aggregate of at least two equal atoms forming a molecule.
165
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Unit 12. Worksheet IV
CHEMICALFORMULA NAME
SO3 KF CO Fe MgCl2
CO2
I. ...
III. ...
II. ...
IV. ...
UNIT
12
C
Complete the following diagram, adding in each box the correct name of the compound written on the left. The possible names from which you should choose are: sulphur dioxide, potassium fluoride, sulphur trioxide, carbon monoxide, iron, carbon dioxide, magnesium chloride, crypton chloride, and manganese chloride.D
Look at the images and write down which type of pure substance it is; that, is whether it is an element (atomic, crystalline or molecular) or a compound (molecular or crystalline solid):ENGLISH. Grupo Anaya, S.A., 1.º ESO. Authorized reproducible material.
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Worksheet V
12
Read the text carefully and answer the following questions without looking them up in your textbook:
“All the matter that surrounds us is made up of some very small particles, called atoms. To get an idea of its size imagine we made a line 1m in length formed of carbon atoms: we would need almost 11 thousand million atoms. There are many types of atoms: hydrogen, carbon, oxygen, sulphur, nitrogen,……. Atoms can join together forming a bigger unit of matter, called a molecule. These molecules can be very simple, as for instance is the case with the ozone molecule, whose chemical formula is O3, or they can be extraordinarily complex, as is the case with the vitamin B12.”
A. What are the particles that make up matter called?
...
...
B. What is an atom?
...
...
C. What is a molecule?
...
...
D. How many carbon atoms could we place along a straight line 1mm in length?
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E. Write down the chemical symbols of all the elements in the text.
...
...
THE PARTICLES THAT FORM MATTER
167
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Worksheet VI
UNIT
12
CLASSIFICATION OF MATTER
A
The following text has some mistakes. Find them and then write down the text correctly:“Matter can be classified according to its aspect in heterogeneous and homogeneous mixtures. The first ones have a uniform aspect, that is, all their parts are equal, but both are made up of different substances. For instance, sea water is made up of (pure) water and different salts. All the substances are made up of very small particles, called molecules, which join together, forming atoms.”
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B
Write four examples of pure substances and four mixtures. Also write the substances they are made up of.PURESUBSTANCES MIXTURES THEMIXTUREISMADEUPOF
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C
Look at the images and write down whether the following materials are a pure substance or a mixture. In the case of a pure substance, state whether it is an element or a compound:D
Complete the following diagram:Homogeneous Elements
I. ………
IV. ………
II. ………
V. ………
III. ………..………
VI. ………
are classified into are classified into
is made up of
for instance for instance for instance for instance
CLASSIFICATIONOFMATTER
169
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Worksheet VII
UNIT
12
METHODS OF SEPARATION OF MIXTURES (I)
A
Complete the diagram, which shows a different way of classifying matter. Write down the appropriate word in the empty boxes. Use the following terms: filtration, pure substances, elements, decanting, solutions, compounds, distillation.B
Write down on which properties the following methods of separation are based and what type of mixture (homogeneous or heterogeneous) applies to each:METHODOFSEPARATION TYPEOFMIXTURE PHYSICALPROPERTY
ITDIFFERENTIATES
Distillation
Filtration
Decantation
I. ... II. ... III. ... IV. ...
VI. ...
VII. ...
VIII. ...
MATTER
Heterogeneous matter Homogeneous matter
their components can be separated by
divide into V. ...
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C
Match with arrows the laboratory material to the separation method it requires. Write down the name of each instrument under the corresponding illustration.D
Draw a small diagram showing how you would separate a mixture of water and petrol (liquids do not mix with each other).DISTILLATION
FILTRATION
DECANTATION
I. ... IV. ...
II. ... V. ...
III. ... VI. ...
171
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Worksheet VIII
UNIT
12
METHODS OF SEPARATION OF MIXTURES (II)
A
Look at the laboratory instruments, and write down their names, which method(s) of separation is used for each, and what its specific function is:I. ...
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II. ...
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III. ...
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IV. ...
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...
... ENGLISH.
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B
Complete the following chart, stating in each case which type of mixture it is (homogeneous or heterogeneous) and which technique you would use to separate the substances that make it up:C
How would you separate the components of a mixture of sand and sugar? Draw a diagram to show the process. Bear in mind that to separate the mixture you have to use two methods of separation; one of them, based on the fact that sand is not soluble, would be filtration.•
Diagram:MIXTURE TYPEOFMIXTURE METHODOFSEPARATION Water solution of salt
Pure water and oil
Water, iron dust
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173
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