Identifying the Elements    

Using your own knowledge & your chemistry textbook identify the elements below, using each of the following clues.

 

 

 

Name

Symbol

1. 

 Used in house light bulbs, a gas.

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2. 

The gas used in colored light signs

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3.

Makes up about 20% of the air

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4.

Plumbers in Rome used it for pipes, used less today

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5.

Used in film, turns black in light, negatives

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6.

Found in these forms: charcoal, graphite, diamond

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7.

Glows in the dark, on some hands of the clock

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8.

Main metal in 25 cents pieces today

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9.

Found in limestone, chalk, shells and teeth

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10.

Makes up 78% of the air

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11.

A gas, necessary for breathing

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12.

The metallic element in ordinary table salt

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13.

Used in photographic flash bulbs because it burns to produce a brilliant white light, also fireworks.

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14.

The element used in electrical wiring and pennies

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15.

Element obtained commercially from seawater

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16.

The protective coating on water taps, shiny

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17.

The elements in ordinary fertilizer

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18.

Metal element that carries oxygen in the blood

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19.

The second most abundant element in the Earth's crust - found in glass.

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20.

Used to kill bacteria in swimming pools

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21.

The element used in your good cutlery

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22.

The alloy of copper and this element make brass

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23.

Quicksilver, used in fluorescent light tubes

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24.

The element used in making steel

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25. 

The element that builds strong bones.

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26.

The element used in light-bulb filaments

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27.

The element that used to be added to most gasoline to prevent knocking 

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28.

Used in match heads, rubber tires, and insecticides

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29.

In toothpaste, protective coating for teeth

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30.

A metal used for jewelry, white, high monetary value

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31. 

The element used in thermometers

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32.

The lightest known gas: sun consists mainly of it

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33.

Used for X-ray and radiation shields

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34.

Latin name aurum, used to fill holes in teeth

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35.

Added to ordinary table salt to control thyroid trouble

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36.

An element used in nuclear reactors for energy

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37.

An element named after the planet Pluto - stays radioactive for millions of years, dangerous

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38.

In honor of Pierre and Marie Curie, pioneers in the field of radioactivity

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39. 

The lead in lead pencils

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40.

Bronze is composed of copper and this element

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41.

The center electrode post of ordinary flashlight batteries   

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42.

The metal plates in car batteries

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43.

Used in the making of atomic clocks that lose one second every 300 years

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44.

Used in the making of supersonic airplane wings and artificial joints for bones,  modern submarine hulls

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45.

Used to make high-speed drills and abrasives

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46.

Used to make light-sensitive photo cells for camera, electric eyes and fire alarms

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47.

Used extensively in making transistors and chips

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48.

Used in poisons to kill rats and insects

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49.

Used as a catalyst in catalytic converters in car exhaust systems to get rid of pollution

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50.

Used in the Goodyear blimp and other dirigibles

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