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The Elements of the Periodic Table Numbers 1 - 55

Across
This element is used with alloys to make it resistant to corrosion. Its symbol is Mn and its atomic number is 25.
This element is toxic and is used in poisons as well as wood preservatives and insecticides. Its symbol is As and its atomic number is 33.
This element is used in civil engineering and is used to make steel. its symbol is Fe and its atomic number is 26.
This element is used to make gunpowder, matches and fireworks. Its symbol is S and its atomic number is 16.
This element is used by plants and animals in the respiration process. Its symbol is O and its atomic number is 8.
This element is an allow used in batteries and cable sheathing. Its symbol is Sb and its atomic number is 51.
This element is an alloy that is commonly used in metals that come into contact with the human body, like rings for pierced noses, ears and other body parts. Its symbol is Nb and its atomic number is 41.
Used as a drug to treat bipolar disorder, this element has the symbol Li and the atomic number 3.
This elements is used in solar cells, turning light energy into electrical energy. Its symbol is Ru and its atomic number is 44.
This element is used in photographic flashes and emits a greenish-yellow colour. Its symbol is Kr and its atomic number is 36.
This element is the main element found in every organic compound and is essential to life on earth. It has the symbol C and the atomic number 6.
This element is a metal used to make electrical filaments, such as those found in lightbulbs. Its symbol is Mo and its atomic number is 42.
This element is widely used in paints, cosmetics and pharmaceuticals. its symbol is Zn and its atomic number is 30.
This element is used as a radioactive tracer and is used to detect all radioactive substances that are used in diagnostic procedures. Its symbol is Tc and its atomic number is 43.
A common compound of this element is used to season food and de-ice roads in winter. This element has the symbol Na and the atomic number 11.
This element kills bacteria and is used in drinking water and in swimming pool water. its symbol is Cl and its atomic number is 17.
This element is used as a getter, a material that combines with or removes trace gases from vacuum tubes. Its symbol is Cs and its atomic number is 55.
This element is present in alcohol and is used to disinfect external wounds. It is also used to detect the presence of starch. Its symbol is Kl and its atomic number is 53.
Most commonly taken as a supplement along with vitamins as it is good for bone health, calcium and to trat ailments such as migraines and premenstrual syndrome, this element uses the symbol Mg and the atomic number 12.
This element is a reddish-brown metal used to make things like coins and wires. its symbol is Cu and its atomic number is 29.
This element is a nutrient found in nuts and red meat that helps maintain a healthy heart and joints. Its symbol is Se and its atomic number is 34.
This element is used with copper and stainless steel to make them more workable and it is used with lead to improve its strength and hardness. It uses the symbol Te and its atomic number is 52.
Down
This element is a salt that is used to create the red colours used in fireworks and it causes paint to glow in the dark. it uses the symbol Sr and its atomic number is 38.
This element is used in photocells and in special glasses and in ceramics. It is also used in fireworks to give it a purple colour. Its symbol is Rb and its atomic number is 37.
This element is used in lightbulbs to prevent the filament from being corroded. its symbol is Ar and its atomic number is 18.
This element is commonly used in high performance pumps and valves, and it is also used in nuclear reactors as it doesn't absorb neutrons. Its symbol is Zr and its atomic number is 40.
This element is used as an alloying agent for hardening and improving the corrosion resistance of platinum and palladium. These alloys are used in furnace windings, bushings for glass fiber production, thermocouple elements, electrodes for aircraft spark plugs, and laboratory crucibles. Its symbol is Rh and its atomic number is 45.
This element is used in glow lamp and fluorescent signs. It is a chemical element with the symbol Ne and the atomic number 10.
This element is used in thermometers as a non-toxic substitute for the element Hg. Its symbol is Ga and its atomic number is 31.
This element is most commonly found in milk and dairy products and baked beans. Its symbol is Ca and its atomic number is 20.
This element is a vital plant nutrient and it is mainly used to make fertilisers. Its symbol is P and its atomic number is 15.
The lightest element on the periodic table. It has the symbol H and the atomic number 1
This element is used as a water purifier/disinfectant. it's chemical symbol is BR and its atomic number is 35.
This element is a metal used to make engines and airframes for rockets, as it can withstand very high temperatures. Its symbol is Ti and its atomic number is 22.
This element is most commonly used in eyedrops, antiseptics and washing powders. It is also used as a rocket fuel igniter. It's symbol is B and it's atomic number is 5.
This element is used to give special properties to glass and is used to make wide-angle camera lenses. its symbol is Ge and its atomic number is 32.
Most commonly used as an alloying agent in producing a type of copper which is extensively used to make springs and electrical contacts. This element has the symbol Be and the atomic number 4.
This element is used in stainless steel and is used in cars and bicycles, as it produces a smooth silver finish and is resistant to corrosion. Its symbol is Cr and its atomic number is 24.
This element is a salt that is used to make soaps, detergents and drain cleaners, as well as being used in the human body to maintain skeletal and smooth muscle contraction. its symbol is K and its atomic number 19.
Most commonly used to inflate balloons, this element has the symbol He and the atomic number 2.
A hard and brittle crystalline solid with a grey metallic lustre, it commonly takes the form of sand or quartz. It has the symbol Si and the atomic number 14.
This element emits red light and is used to make the red phosphors for colour television picture tubes as well as lasers and camera lenses. Its symbol is Y and its atomic number is 39.
This element is used in photographic flashes and in high-pressure arc lamps to produce ultraviolet light. Its symbol is Xe and its atomic number is 54.