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Element Compound Mix

Junior Cert Science

QuestionAnswer
What is the name given to the small particles that all substances are made of Atoms
What is the definition of an atom An atom is the smallest part of an element that still has the properties of that element
What is the definition of an element An element is a substance which cannot be broken down into simpler substances by chemical means
Which non metal element can exist in two form, graphite or diamond Carbon
Which yellow non metal solid element is used in fireworks and matches Sulfur
Which silver metal element is used in the manufacture of ships and skysrapers Iron
Which brown solid metal element is an excellent conductor of electricity Copper
Which yellow solid metal is used in making of jewellery Gold
Which soft silver white metal can easily be cut with a knife Sodium
What is the definition of a compound A compound is formed when two or more elements combine together chemically
What is the definition of a molecule A molecule is the smallest part of an element or compound that can exist on its own
What is the definition of a mixture A mixture consists of two or more different substances mixed together but not chemically combined
In a mixture, does the proportions of each substance in the mixture matter No
Does the proportions of each substance matter in a compound Yes
Is a mixture difficult or easy to separate Easy
Is a compound difficult or easy to separate Difficult
Give two examples of a compound Water and sodium chloride
Give two examples of a mixture Air and seawater
What is a physical change A reaction in which nothing new is made
What is a chemical change A reaction in which something new is made
Created by: Teacher Amrein