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Science test Revision
Cards in this deck (16)
- 1What's the Matter? You've got Substance? Science TestThursday 28 May
- 2Name the processes of changing states of matter.Fusion/Melting = Solid to Liquid
Freezing = Liquid to Solid
Vaporization/Boiling = Liquid to Gas
Condensation = Gas to Liquid
Sublimation = Solid to Gas
Deposition = Gas to Solid - 3Explain Diffusion.Diffusion is the process of a substance spreading from a region of high concentration to an area of low concentration. This can happen in different states of matter, like in air or water.
- 4Explain Density.If one substance has a lower density than the one it is put into or exposed to, than it will sink to the bottom of whatever it is in. If it has a lower density, it will rise to the top. When these substances have combined, they cannot properly separate unless a chemical change has happened.
- 5Explain Convection.Convection is the process of heat transfer in fluids. It acts like a stack of dominoes, the hot air rising up with more energy and movement and the cooler air with less energy and movement. This cycle repeats continuously in a circular pattern.
- 6GraphingGraphing is a way of displaying information in a simple and easy to read way. It has a x and y axis. The x axis runs along the bottom of the graph and the y axis runs along the side, usually on the left or on both sides. The data already recorded is evenly distributed. On some graphs, a line of best fit is drawn.
- 7What is a line of best fit?A line of best fit is a straight, continuous line that runs from the lowest point to the highest. This line shows the errors in an experiment. The closer you are to the line the more accurate the experiment was.
- 8Explain the structure of an atom.An atom is made up of three main things, protons, neutrons and electrons. The electrons are found in the outer shells of the atom, called electron shells or clouds. The Protons and neutrons are found in the nucleus of the atom.
- 9What is a Proton?A proton is part of an atom that is positively charged. To find the number of protons in an atom, you need to know that the number or protons = the atomic number. Protons are found in the nucleus of the atom.
- 10What is a Neutron?A neutron is part of an atom that has a neutral charge. To find the number of neutrons in an atom you need to take away the mass number from the atomic number. Neutrons are in the nucleus of the atom.
- 11What is an Electron?An electron is part of an atom that has a negative charge. They are found in the electron shells and clouds of an atom. There are the same amount of Electrons in an atom as Protons. The first electron shell around an atom can hold only 2 electrons, but the rest can hold 8.
- 12How does the elements square explain it?It is made up of four things: (for example Zinc)
1. The Atomic Number. (30)
2. The symbol of the element (Zn)
3. The name of the element (Zinc)
4. The mass number (the number of protons + neutrons) (65.38) - 13What is the difference between Homogenous and Heterogeneous mixtures?A homogenous mixture is a mixture that when it has been settled down the separate particles can not be clearly seen. Heterogeneous mixtures are ones that separate after they have settled down and that can be clearly seen.
- 14How do you use the periodic table to find a specific element using periods and groups?To find a specific element in the periodic table, you use its 'coordinates', meaning its position in certain periods and groups. Groups go downwards and are labelled using roman numerals. Periods go across and are labeled with normal numbers.
- 15If I said: Find the element in Group 6 period 3, what is the element?Answer: Sulfur
Try some more using the Periodic Table! - 16Congratulations! You have completed revising for your test. You have done the best you can and in the test, you would have too. Good Luck! :}:)
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- Flashcards on Science test Revision, created by ckelly6367 on 26/05/2015.
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