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There are 118 Elements known to science today. How many occur naturally on Earth?
What is 98?
The basic unit of matter, with a nucleus at the center surrounded by negatively charged electrons that move around the nucleus in orbit.
What is an atom?
When one chemical changes its state of matter, the change is called a .........................................
What is physical change?
A substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound is known as a (n) .....................................
What is reducing agent?
Liquids that mix easily are known as .........................
What is miscible?
A substance that can cause an increase in cellular mutations, some of which are harmful but others which have little or no effect on the body's function; may cause cancer but not always.
What is a mutagen?
When two or more atoms are joined together chemically, a (n) .............................. is created.
What is molecule?
What type of change occurs when ice melts and becomes water?
What is physical?
A combination of substances that are held together by physical rather than chemical ties is known as a .........................................
What is physical mixture?
Nail polish containing glitter is an unstable physical mixture of undissolved particles in a liquid, which is known as a (n) ....................................
What is suspension?
Any substance that occupies space and has mass (weight). All ..... has physical and chemical properties and exists in the form of a solid, liquid, or gas.
What is Matter?
A molecule containing two or more atoms of the same element in definite proportions.
What is an elemental molecule?
When a substance gains oxygen, the substance is ..................
What is oxidized?
What is made when salt is dissolved in water?
What is a solution?
A mixture of two or more substances that are united with the aid of a binder is a (n) ................................
What is emulsion?
Everything known to exist in the universe is either made of matter or ............................... which does not occupy space or have mass.
What is energy?
A new substance formed by chemically combining two or more atoms of different elements is known as a (n) ............................
What is compound?
Redox is also known as ....................................
What is oxidation-reduction?
In creating a solution, the liquid used to dissolve a substance is called the ......................?
What is solvent?
Substances that act as a bridge to allow oil and water to mix or emulsify are ...............................
What are surfactants?
The simplest form of chemical matter and contains only one type of atom. It cannot be broken down into a simpler substance without a loss of identity.
What is an element?
An ingredient that binds two normally incompatible materials together and binds them into a uniform and fairly stable mixture.
What is an emulsifier?
A chemical reaction in which oxygen is subtracted from or hydrogen is added to a substance is called a (n) ..............................
What is reduction reaction?
Because it has the ability to dissolve more substances than any other solvent, ....................... is known as a universal solvent.
What is water?
The head of a surfactant molecule is ........................., meaning water-loving.
What is hydrophilic?