To view or print a Chemistry crossword puzzle click on its title.
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Organic Chemistry
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Simplest organic compound composed only of the elements carbon and hydrogen. A property of a compound to exist in both left and right forms. Describes a series of compounds that differ from one another by a repeating unit. International Union of Pure and Applied Chemistry. All compounds that contain carbon.
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Hard
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Organic Chemistry
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what is the region on IR called that does not differ drastically between compounds?. what form of substituents does SN2 prefer?. which method of identification only focuses on functional groups?. what is the method of identification used to tell the difference between diastereomers?. another name for a SN1 reaction is?.
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Hard
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Particles
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when the particles are loosely packed together it is a ________. when a solid turns into a liquid it ____________. when a liquid turns into a gas it ________. the particles are pulled together by the _______. when a gas turns into a liquid it __________.
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Older Children
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Periodic Table
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all animals breathe this gas out when they exhale. A particle that contains 2 or more atoms is called a m_______ . All elements are found in the ________ table. The smallest building block of matter. All elements in the periodic table are represented by a letter or two called chemical ________.
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Older Children
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Periodic Table of Elements
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Read all the definitions,and answer all questions to the corresponding box.
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The chemical element of atomic number 20, a soft gray metal.. A colorless, odorless unreactive gas that forms about 78 percent of the earth's atmosphere.. The chemical element of atomic number 17.Think of swimming pools.. The chemical element of atomic number 27, a hard silvery-white magnetic metal.. A colorless, odorless, highly flammable gas..
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Big
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Physical & Chemical Changes
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The act of burning something. the change of state in which a liquid becomes a solid as energy or heat is removed. When a substance changes into 'another' substance with other properties.. is difficult to reverse. the change of state from a liquid to a gas.
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Older Children
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Properties of Mixtures
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compound made up Na + Cl. a mixture of two liquids that don't disslove. particles are larger than in a solution but do not settle out. a single substance breaks up, forming two or more different substances. compound made up of 2 molecules of hydrogen & 1 molecule of oxygen.
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Hard
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Quick Chemistry
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The element with an atomic mass of 18.998. The element with the atomic number 7. Safety wear during experiments. When matter melts it turns from solid to ........ The strong bond between two non-metals.
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Hard
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Rates of Chemical Change
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A type of calorimeter which allows chemists to determine energy changes under conditions of constant volume.. It is a biological catalysts that are enormous protein molecules.. A reaction that absorbs energy. For this type of reaction, the energy absorbed is greater than the energy released.. The study of energy and energy tranfer is refer to _________________. . The enthalpy of formation of an element in its standard state is __________. .
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Hard
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Science
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The transition from liquid to gas. minute portion of matter. Motion of liquid or gas. to press or squeeze particles together. The transition from gas to liquid.
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Older Children
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Solid, Liquid, Gas
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the state of water in which it is an invisible gas. particular kind of material. changes states from a gas to a liquid, mainly due to the temperature getting cooler. a change in the size, shape, or color of a substance that does not change it into a different substance. anything that takes up space and has weight.
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Older Children
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Solids, Liquids and Gases
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This is a very dangerous type of gas.. This is what we see in the winter.. This is the last step in the water cycle.. This is what we breath out.. A type of gas that we need to live..
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Older Children
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Special Mixtures
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evaporation. when a solution appears the same throughout. when a solid disappears into a liquid it .... the substance that disappears in a liquid. condensation.
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Older Children
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The Chemistry of Paint
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Substance used to make solution 1 for making white paint. A liquid, liquefiable, or mastic composition. A _______ is a material that changes the color of reflected or transmitted light as the result of wavelength-selective absorption.. A dangerous type of paint that has been banned. The study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols.
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Hard
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The Elements
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This element's name comes from the Greek word meaning 'inactive'. All atoms of this element contain 91 protons. This element was named after a university in the United States. This element's chemical symbol is Yb. This element was named for a Russian Research Laboratory.
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Hard
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Thermochemistry
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Complete the puzzle below
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absorbs heat from the surroundings. used to measure heat flow in a reaction. the energy stored in chemical bonds of a substance. the part of the universe on which you focus your attention. releases heat to its surroundings.
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Hard
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Things You'll Find Around the Lab
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A few handy items you will find in a laboratory
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a dish that you can grow samples in. use this to heat up liquids. use this on top of a Bunsen burner. use these to protect your eyes in science. use this to store liquid.
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Older Children
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Types of Chemical Reaction
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Circle the vocabulary word below
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When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. . the chemical equation that shows the chemical reaction needs to be balanced.. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.. a substance that takes part in and undergoes change during a reaction.. a substance that is formed as the result of a chemical reaction. .
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Big
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Uses of Elements
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is the most abundant component of atmosphere.. used as semiconductor.. is extremely important in allowing us to digest our food properly and to absorb the many other elements that we need to survive.. is the most abundant element on Earth.. used in manufacturing cans, foils, and kitchen utensils, pipes, window frames..
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Hard
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