Mystery Elements Cards Instructions: Print, cut apart on lines and shuffle. Use the numbers in the lower right corner of each card to find the “mystery” element name on the answer sheet. Mystery Element Mystery Element First element in the periodic table Diatomic gas One of two elements that make up water 79% of our atmosphere is this in gaseous form Gaseous at room temperature Liquid used in cryogenics and to make ice cream Extremely flammable One of two elements in ammonia Oxidation state (charge) of +1 Integral part of amino acids Mystery Element Mystery Element Often used to inflate balloons Major component of air Gaseous at room temperature Waste product of photosynthesis Temporarily changes one’s voice when a small amount is inhaled Human life would not exist without it Second lightest element Oxidation state (charge) of -2 A noble gas One of its states (isotopes) plays a major role in the protective layer around the Earth Mystery Element Mystery Element Lightest metal element Halogen Chemically very similar to sodium Poisonous and corrosive gas Used in batteries Reacts explosively with hydrogen Reacts easily with water Most reactive and electronegative of all elements Oxidation state (charge) of +1 Used in production of Teflon Mixtures & Solutions: Lesson 2, Engineering and the Periodic Table Activity — Mystery Elements Cards 1 Mystery Element Mystery Element Alkaline earth metal Colorless inert gas Contains four protons Part of the noble gas family Used as a hardening agent in metal alloys Second lightest noble gas Emeralds and aquamarines contain this element Used to make attention-getting signs Toxic Contains 10 protons Mystery Element Mystery Element Solid at room temperature Alkali metal Brown or black non-metal One of two elements present in salt Acts as a Lewis-acid Found in baking soda Oxidation state (charge) of +3 (very electrophilic) Necessary for life to exist Used to make insulating fiberglass Oxidation state (charge) of +1 Mystery Element Mystery Element Contains six protons Contains 16 protons Diamond and graphite are composed of this Yellow non-metal Present in all organic compounds; the basis of life Found in several amino acids; essential for life Used in radioactive dating Associated with a rotten egg smell Makes steel when combined with iron Part of a relatively strong acid used as an industrial raw material Mystery Element Mystery Element Very abundant on Earth Used to disinfect water and swimming pools Alkaline earth metal Diatomic gas Used to make mild of magnesia and Epson salts One of two elements found in common salt Used to make metal alloys Extremely poisonous An important human nutrient found in nuts, seeds and whole grains Halogen with a -1 oxidation state (charge) Mixtures & Solutions: Lesson 2, Engineering and the Periodic Table Activity — Mystery Elements Cards 2 Mystery Element Mystery Element Very resistant to oxidation Contains 18 protons Strong and lightweight metal Colorless and odorless Used to make automobiles and beverage cans Commonly used in lighting Was once considered a precious metal due to the rarity of the pure element Most common noble gas on Earth Oxidation state (charge) of +3 No confirmed chemical compounds contain this element Mystery Element Mystery Element Similar properties to carbon, but less reactive Shares many characteristics with sodium Contains 14 protons Second lightest metal Second most abundant element in Earth’s crust Alkali metal that reacts violently with water Quartz and sand contain this element Found in high quantities in bananas Used in semiconductor industry and a major component of glass and cement A shortage of this element in the body leads to a fatal condition known as hypokalemia Mystery Element Mystery Element Very reactive, solid, non-metal Soft, gray alkaline earth metal Oxidation state (charge) of -3 or +5 Essential for life Found in all living cells Human nutrient found in dairy products Burns spontaneously in air Fifth most abundant element in the Earth’s crust Used to produce fertilizer and by cells to transport energy Oxidation state (charge) of +2 Mystery Element Mystery Element Transition metal Comes from Latin word “ferrum” Contains 21 protons Used to make high-intensity lights Essential to all organisms; used in the heme complex in humans Used to form metal alloys with aluminum Most abundant element that makes up the Earth Found in rare minerals in Scandinavia Most widely-used metal Extracted from hematite and magnetite Mixtures & Solutions: Lesson 2, Engineering and the Periodic Table Activity — Mystery Elements Cards 3 Mystery Element Mystery Element Similar properties to zirconium Contains 27 protons Used to make very strong, light-weight metal alloys Corrosive-resistant transition metal Used to make medical implants, aircraft and boats Oxidation state (charge) of +2 or +3 As strong as steel, but half the weight Used in radiotherapy Corrosion resistant Comes from the German word “kobold,” which means evil spirit Mystery Element Mystery Element Transition metal containing 23 protons Used in coin making; and brass and iron plating Used to make metal alloys, particularly steel Rare and ductile A US monetary coin shares its name with this element that contains it Very toxic Found in rechargeable batteries Only found bound to other elements Belongs to the iron group The Earth’s core is supposedly composed of this element and iron Mystery Element Reacts immediately with oxygen, forming a protective layer Steel gray color Helps with sugar metabolism in humans Used in making metal alloys as well as in dyes and paints Mystery Element Used in the US one cent piece Reddish-gold color Known as “chalkos” by the Greeks, “aes Cyprium” by the Romans, and simplified to “cuprum” Used by civilizations more than 10,000 years ago Used to make brass/bronze metal alloys Mystery Element Mystery Element Essential to steel production Contains 30 protons Contained in potassium permanganate, which is used in medicine Fourth most common metal used on Earth Necessary for life; found in animal proteins Human deficiency leads to memory and sensory loss as well as stunted brain development Oxidation state (charge) of +2 Nutrient in all of life Found primarily in pyrolusite Part of the iron group of elements Mixtures & Solutions: Lesson 2, Engineering and the Periodic Table Activity — Mystery Elements Cards 4