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CHEMISTRY TRIVIA

1) What is the smallest unit of a substance that retains the properties of that substance?


A molecule is the smallest unit of a substance that retains the properties of that substance.

2)What type of charge does a neutron carry?


Neutrons are particles with no charge. Protons are particles with a postive charge, and electrons are particles with a negative charge.

3) What are substances that control the rates of chemical reactions?


Catalysts are substances that control the rates of chemical reactions.

4) What are microscopic spheres of 60 atoms of pure carbon in a spherelike structure that resembles a geodosic dome?


"Buckyballs" are microscopic spheres of 60 atoms of pure carbon in a spherelike structure that resembles a geodosic dome. Also called fullerenes or buckminsterfullerenes, they were named after R. Buckminster Fuller who invented the geodosic dome. Buckyballs are of great interest to scientists because they contain a cavity large enough to hold other elements, even whole molecules. Once an element has been deposited into the cavity, it cannot emerge without being heated to high temperatures. This technology may someday be used to deliver medication to specific locations within the body.

5) What is the common term for an electrochemical cell in which terminals are connected to electrodes immersed in a solution of electrolytes?


A battery is an electrochemical cell in which terminals are connected to electrodes immersed in a solution of electrolytes.

6) What law states that the amount of heat needed to change one substance to another depends on the substances and not on the reactions involved?


Hess's Law states that the amount of heat needed to change one substance to another depends on the substances and not on the reactions involved.

7) What English chemist and physicist discovered hydrogen?


English chemist and physicist Henry Cavendish not only discovered hydrogen, but also determined the mass of the Earth.

8) Matter that does not enter chemical reactions is described as what?


Inert matter does not enter chemical reactions.

9) Which type of matter has a definite volume but no definite shape?


Liquids have a definite volume but no definite shape. Because the intermolecular forces are weak in a liquid, it is able to change its shape to conform to its container.

10) The temperature at which a gas becomes a liquid is its _____________?


The temperature at which a gas becomes a liquid is its condensation point.


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