Fertilizer, plastic and gasoline The smallest particle of an element that still retains the properties of that element is called a(n): - CORRECT ANSWER -Atom Which part of an atom has a negative charge? - CORRECT ANSWER -Electron When two or more atoms are joined chemically, it forms a(n): - CORRECT ANSWER -
Molecule A ___________ is made up of two or more atoms that are chemically joined together. - CORRECT ANSWER -Molecule Liquids: - CORRECT ANSWER -Have a definite size but not a definite shape Which of these is considered a type of matter? - CORRECT ANSWER -Water Rusting iron and burning wood are examples of changes in: - CORRECT ANSWER -
Chemical properties When water becomes ice, it: - CORRECT ANSWER -Undergoes a physical change A __________ is a change in the state of a substance, without the formation of a new substance. - CORRECT ANSWER -Physical change The lightest element on earth is: - CORRECT ANSWER -Hydrogen The most abundant element found on earth is: - CORRECT ANSWER -Oxygen Water makes up about _____ of the human body. - CORRECT ANSWER -65% The relative degree of ___________ is the potential hydrogen (PH) of a substance. - CORRECT ANSWER -Acidity or alkalinity Anything below 7 on the PH scale is considered: - CORRECT ANSWER -Acidic