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Matter is everything around you. Matter is anything that has a mass and volume. volume Matter is anything made of atoms and molecules. Scientists have identified three states of matter: matter • • • solids liquids gases We speak about different states of matter depending on the physical state of molecules and atoms. States of Matter can change Elements and compounds can move from one physical state to another and not change. Oxygen (O2) as a gas still has the same properties as liquid oxygen. The liquid state is colder and denser but the molecules are still the same. Water is another example. The compound water is made up of two hydrogen (H) atoms and one oxygen (O) atom. It has the same molecular structure whether it is a gas, liquid, or solid. Although its physical state, it is to say, its properties (density, temperature, pressure …) may change, its chemical state remains the same. It is to say, the formula of water remains the same. If the formula of water were to change, that would be a chemical change. If you added another oxygen atom, you would make hydrogen peroxide (H2O2). Its molecules would not be water anymore. These links relate to matter and the states of matter. Search them for more information. http://www.chem4kids.com/files/atom_intro.html http://www.chem4kids.com/files/elem_intro.html http://www.chem4kids.com/files/elem_intro.html http://www.chem4kids.com/files/matter_chemphys.html http://www.chem4kids.com/files/matter_solid.html http://www.chem4kids.com/files/matter_liquid.html http://www.chem4kids.com/files/matter_gas.html Related vocabulary Chemical properties A characteristic of a substance that can only be seen when the substance changes and a new substance is formed; describes how matter reacts with other matter. Physical properties A characteristic of a material or object that can be seen or measured without changing the material into a new substance. Metric System A system of measurement in which the number of smaller parts in each unit is based on the number 10 and multiples of 10. Standard Unit A unit of measure that everyone agrees to use. Property A characteristic that describes matter. Volume The amount of space that matter takes up. Density The property that describes how much matter is in a given space or volume. Matter Anything that has mass and takes up space. Mass The amount of matter in something. LET’S PLAY http://www.quia.com/mc/504943.html http://www.quia.com/jfc/504943.html http://www.quia.com/ws/504943.html Name _____________________________ Date ___________________ Properties of Matter Complete the puzzle. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 DOWN 2. These are built with very strong materials to withstand forces. DOWN 3. The amount of stress or force that an object can take. DOWN DOWN 4. A physical 5. A physical property that is a property that is a measure of the measure of a pull of gravity on solid's ability to an object. This easily break or property will shatter. change if an object is on a planet other than Earth. DOWN 8. A type of material that is very elastic. (2 words) DOWN 10. You buy these based on their size. DOWN 13. The amount of matter in a given space. ACROSS 1. A physical property, in the form of different wavelengths of light, which the eye can perceive. ACROSS 3. A physical property that is a general measure of how large or small something is. ACROSS ACROSS 6. The matter of an 7. The hardest object with a high natural substance. density is ____ tightly packed together than the matter of an object with a lower density. ACROSS ACROSS 11. The ability of a 9. A physical property that is a solid object to measure of return to its something sticking original size and to a surface. shape after it has been stretched. ACROSS 16. A physical property that is a measure of a solid's resistance to being dented. ACROSS 17. A physical property that is a measure of the distance from one end of something to the other. ACROSS 12. A physical property that tells you how hot or cold matter is. DOWN 15. The amount of material in an object. This is the same whether the object is on Earth or Mars. ACROSS 14. A physical property, such as the roughness of something, which you can observe by using your sense of touch. Answer Key 1 4 7 8 D R C O L O 2 W O E A I A M O N U H B T S 5 T E T E L A S I T M P E R A T U R R C K I N 14 1 5 A 1 6 I C I T D S S S D N E E S S 10 S N Y E H A K 13 X T U R S R E E E T E M H A Z G N B I E L R N M O R B 12 6 B T 11 S T D 9 G 3 R S D E E R N S S I 17 L E N G T H Y Learn how to calculate mass, volume, and density. Do the activities. http://www.thetech.org/exhibits/online/topics/54a.html 1. COMPLETE THESE DEFINITIONS AND GIVE EXAMPLES. a) __________ is anything that has a mass and volume. Example: ___________ b) _____________ is any property you can measure. Examples: ___________ c) ___________ _____________ are those determined by scientists. They are mass, time, temperature and length. d) __________ ___________, those left resulting from mathematical operations among them. 2. COMPLETE What it measures Abbreviation Unit Abbreviation Mass l m t Temperature Kelvin 3. JOIN WITH ARROWS Mass Happiness Volume Beauty Temperature Table Speed It is a magnitude It is not a magnitude 4. COMPLETE THE FIGURE: 5. CHANGING UNITS a) From days to hours 23 days = ………………..hours b) From years to months 12 years = ………………….months c) From mg to g 190 mg = ………………………g d) From dm to m 1789 dm3 = …………………….. m3 6. Write a sentence using a matter, a magnitude and a unit, marking the first using an “m m”, the second with an “ff” and the third one with a “u u” ______________________________________________________________________ ____________________________________________________. 7. COMPLETE THE CROSSWORD ACROSS 3 The smallest unit in which an element can be divided 4 A positively charged particle DOWN 1A substance consisting of the same kind of atoms 2The smallest unit of a compound 6 5A negatively charged particle The core of the atom 7 A substance consisting of several elements 8 The external part of the atom 9 A particle with no charge 8. JOIN WITH ARROWS Water Paella Aluminium It is a mixture Strawberry milkshake Alcohol Sea Water Notebook It is pure substance 9. JOIN WITH ARROWS Galaxy Comet Star Planet Nebula Universe Satellite The huge space which contains all of the matter and energy in existence A celestial body consisting of a head surrounded by a long nebulous coma A big ball of dirty ice and snow in outer space A self-luminous celestial body consisting of a mass of gas in which the energy is generated by nuclear reactions A giant collection of gas, dust, and millions or billions of stars A diffuse mass of interstellar dust or gas An object that moves around a larger object 10. Celestial bodies have very different sizes. Some of them contain thousands and thousands of others. Order from the biggest to the smallest ones in the box and give an example. Galaxy, Planet, Star, Group of Galaxies, Satellite, Comet, Star dust The biggest Example: Planet Earth The smallest 11. Space distances are huge. It is not possible to use habitual length units like kilometres. • What unit is used instead? • How do you define it? • Could you calculate the equivalence between that unit and kilometres? Hypotheses on the Universe Throughout history, there have been numerous hypotheses on the structure of the universe, from ancient and non scientific beliefs to the present one on an expanding universe. Complete the following text using the right words. PTOLOMEIC SYSTEM Ptolemy worked from the data of past astrologers to map over one thousand stars. He compiled a list of 48 constellations, and, for the most part, described the longitude and latitude lines of the earth. He was a believer that the earth was the centre of the universe and worked to advance this theory. The Ptolemaic system is explained why some planets seemed to move backwards for periods of time in their orbit around earth. He theorized that each planet also revolved in a smaller circle as well as a larger one. This was called the "epicycle." This theory would survive for 1400 years, until it was finally accepted that the earth was itself another planet in orbit around the sun. COPERNICAN SYSTEM Nicolaus Copernicus (February 19, 1473 — May 24, 1543) was the first astronomer to formulate a scientifically based heliocentric cosmology that displaced the Earth from the center of the universe. His publication of a scientific theory of heliocentrism, demonstrating that the motions of celestial objects can be explained without putting the Earth at rest in the center of the universe, stimulated further scientific investigations, and became a landmark in the history of modern science that is known as the Copernican Revolution. Johannes Kepler (lived December 27, 1571 – November 15, 1630) was a German astronomer He looked at the solar system and discovered three laws about how it works. THE BIG-BANG One of the best known theories in cosmology is the Big Bang. This is the idea that our universe started out much hotter and denser than it is now and has been expanding since then. This theory is based on observations of our universe, among which are: External galaxies are receding in such a way that their recessional speeds are proportional to the distance they are away from us (this is called Hubble's Law after Edwin Hubble who first noticed it). This observation is explained well by a uniform expansion of the universe. If the universe is expanding, it must have started out very small some time far in the past. It is this point which has been called the beginning of the universe or the "Big Bang." 13. Complete the box. There are some links where you can search for information http://www.kidsastronomy.com/solar_system.htm http://www.frontiernet.net/~kidpower/planets.html http://library.thinkquest.org/28327/main/cockpit.html#bottom Name: Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Diameter Distance from Sun Number Main Satellites of Satellites (aprox) 14. Besides Sun, planets and satellites, the Solar System consists of other celestial bodies. Explain their characteristics: Comets: ____________________________________________________ ____________________________________________________ Asteroids: __________________________________________________ ___________________________________________________ Dwarf Planets: ______________________________________________ _________________________________________________ Meteorite: __________________________________________________ ___________________________________________________ 15. Answer the questions. What’s the name for the Earth movement around Sun? How long does it take for the Earth to orbit the Sun? How long does it take for the Earth to rotate on its own axis? ___________ What’s the name for this movement? ______________ How long does it take for the Moon to orbit the Earth? ________ And to orbit itself? _________________ 16. Eclipses and seasons http://www.mreclipse.com/Special/SEprimer.html a. Could you define an eclipse? _________________________________ _____________________________________________________________ This drawing represents an eclipse; Is it an eclipse of Sun or Moon? _________________ Why? ______________________________________________________ _____________________________________________________________ Name the bodies it consists of and draw the other kind of eclipse in the box b. This drawing represents Earth moving around Sun. Divide its orbit in four sections, each of them corresponding to a season. Paint each season in a different colour, Do the seasons in the northern hemisphere correspond to the seasons in the southern one? _______ There are four special moments in this annual movement. The solstices and the equinoxes, what’s the matter with day and night length in each of them? _______________________________ ______________________________________________________________________ ____________________________________________________ Date and draw them in the picture above.