The study of substances that contain carbon is called _____ chemistry. - ANSWER organic
Substances lacking the element _____ are classified as inorganic. - ANSWER carbon
Matter does NOT exist in which form? - ANSWE
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The study of substances that contain carbon is called _____ chemistry. - ANSWER organic
Substances lacking the element _____ are classified as inorganic. - ANSWER carbon
Matter does NOT exist in which form? - ANSWER energy
Any substance that occupies space and has mass (weight) is considered: - ANSWER matter
The simplest form of chemical matter is a(n): - ANSWER element
There are _____ naturally occurring elements. - ANSWER 98
A(n) _____ is the basic unit of matter. - ANSWER atom
A(n) _____ is a chemical combination of two or more atoms in definite (fixed) proportions. - ANSWER molecule
An elemental molecule is a molecule containing: - ANSWER two or more atoms of the same element in definite proportions
A chemical combination of two or more atoms of different elements in definite proportions is a(n): - ANSWER compound
Characteristics of matter that do not involve chemically changing a substance are called _____ properties. - ANSWER physical
When a substance undergoes a _____ change, a new substance with different properties is created. - ANSWER chemical
A(n) _____ releases a significant amount of heat. - ANSWER exothermic reaction
The rapid oxidation of a substance, accompanied by the production of heat and light, is called: - ANSWER combustion
A chemical combination of matter in definite (fixed) proportions is called a(n): - ANSWER pure substance
A _____ is a physical combination of matter in any proportions. - ANSWER physical mixture
Which of the following is NOT a physical mixture? - ANSWER element
A stable physical mixture of two or more substances is a(n): - ANSWER solution
A(n) _____ is a substance that dissolves another substance to form a solution. - ANSWER solvent
If two liquids are mutually soluble, they are considered: - ANSWER miscible
A(n) _____ is an unstable physical mixture of undissolved particles in a liquid. - ANSWER suspension
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