Metals
Australia holds the world's largest deposit for this radioactive metal element used as fuel in nuclear power plants.
What is Uranium?
This non-metal element exists as a diatomic gas, makes up approximately 78% of Earth’s atmosphere, and is essential for the production of ammonia in the Haber process.
What is nitrogen?
This ionic compound, commonly known as table salt, is formed from a highly reactive metal and an extremely toxic yellow gas ions arranged in a crystal lattice structure.
What is sodium chloride?
This covalent substance is composed of two hydrogen atoms bonded to one oxygen atom and is often called the “universal solvent.”
What is water?
What is brittle?
This transition metal is the main component of steel and forms a flaky substance when it oxidises.
What is Iron?
This halogen non-metal is the most reactive element on the periodic table and is commonly added to toothpaste to help prevent tooth decay.
What is fluorine?
This is the common name given to chemical compounds that have a metal ionically bonded to a non-metal.
What is a salt?
This covalent compound is commonly called 'fart gas' as it is a significant component of intestinal gas. It is flammable and a hydrocarbon gas.
What is methane?
This physical property measures a materials ability to allow electrons or ions to move through it. When solid metals have this property but ionic and covalent substances do not.
What is electrical conductivity?
This soft alkali metal is stored under oil because it reacts rapidly with oxygen and water, its symbol is derived from the Neo-Latin word natrium.
What is sodium?
This yellow non-metal is commonly found near volcanic regions, forms the basis of a strong acid, and when it is combined as a polyatomic ion with 4 oxygens it has a -2 charge.
What is sulfur?
This ionic substance involves a common metal in kitchen foil combined with a non-metal gas created by plants when they photosynthesise.
What is aluminium oxide?
This giant covalent substance is one of the hardest naturally occurring materials because each carbon atom forms four strong covalent bonds in a tetrahedral structure.
What is diamond?
This property describes the maximum amount of a substance that can dissolve in a given solvent at a specific temperature to form a saturated solution.
What is solubility?
This alkali metal is the lightest solid element and is widely used in rechargeable batteries for phones and electric vehicles.
What is lithium?
This highly reactive non-metal normally exists as a diatomic molecule in Earth’s atmosphere, but ultraviolet radiation in the upper atmosphere can split it into atomic form, allowing it to recombine into ozone that helps absorb harmful UV radiation.
What is oxygen?
This ionic substance is a combination of a metal from group 2 who's atomic number is greater than 10 but less than 20 and a non-metal polyatomic family whose name ends in 'ide'.
What is magnesium hydroxide?
This is the number of elements from the periodic table that we will involve in covalent bonding in high school chemistry learning.
What is 10 elements?
H,C,N,O,F,P,S,Cl,Br,I
A substance has a melting point of 20°C and a boiling point of 85°C. At 50°C, this substance would exist in this state of matter.
What is a liquid?
This alloy commonly used in jewellery is created by combining gold with white metals such as palladium or nickel and is often coated with rhodium to enhance its bright silver appearance.
What is the white gold?
This radioactive non-metal noble gas is produced naturally from the decay of uranium in rocks and is considered a major health hazard when accumulated in enclosed spaces.
What is radon?
This ionic compound involves a metal and a polyatomic ion whose names start with the letter P.
What is potassium phosphate?
This covalent compound is the primary component of quartz and many forms of sand. When it is melted at extremely high temperatures of 2000 degrees it can make glass.
What is silicon dioxide?
These physical properties of many ionic substances is caused by the strong electrostatic attractions between oppositely charged ions in a giant crystal lattice, requiring large amounts of energy to separate them.
What are high melting and boiling points?