Chemistry 101 | Questions with 100% Verified Answers | Latest
Update 2026/2027
Question: Chemistry is the study of
Answer:
the properties and behaviors of matter
Question: Matter is ..
Answer:
the physical material of the universe, it is anything that has mass and occupies space
Question: A property is
Answer:
any characteristic that allows us to recognize any type of matter and to distinguish it from
other types
Question: Matter is typically found as a
Answer:
mixture of two or more substances; it is comprised of roughly 100 substances called
elements
Question: How is matter characterized by?
Answer:
1. its physical state (gas, liquid, a solid0
2. its composition (whether it is an element, a compound, or a mixture)
Question: What is an element?
Answer:
An element is a substance that cannot be decomposed into a simpler substance. They are
composed of one atom and each element is composed of a unique kind of atom.
Question: What is an atom?
Answer:
An atom is the smallest representative particle of an element. They are the small building
blocks of matter.
,Question: What do the properties of matter relate to?
Answer:
The properties of matter relate to the composition (type of atom contained) and to the
structure (the arrangement) of atoms.
Question: What are molecules?
Answer:
Question: What are the three states of matter?
Answer:
1. gas (vapor)- has no fixed volume or shape; rather it uniformly fills its container. Can be
compressed into a smaller place or occupy a large space
2. liquid- has a distinct volume independent of its container, assumes the shape of the
portion of the container it occupies, and is not compressible to any appreciative extent
solid- has both a definite shape and a definite volume and is not compressible to any
appreciable extent
Question: In which of the three states do molecules move fastest?
Answer:
in the gas state and slowest in the solid state
Question: Why can people pour water?
Answer:
b/c in a liquid the molecules are moving fast and slide over one another
Question: molecules in a solid cannot move much, they are
Answer:
seemingly fixed
Question: What is a pure substance?
Answer:
A pure substance is matter that has distnct properties and a composition that does not
very from sample to sample (ex. Sodium dichloride, Sodium Chloride- salt)
elements and compounds can be a pure substance
,Question: All substances are
Answer:
elements or compounds
Question: What is a compound?
Answer:
Substances that consist of at least two different types of atoms (elements). (ex. water
H2O)
Question: Mixtures are
Answer:
Question: What is a solution?
Answer:
Question: Are homologous mixtures and solutions the same thing?
Answer:
yes, the words are essentially interchangeable
Question: How many known elements are there..about?
Answer:
118
Question: The Milky Way Galaxy contains 74% H and 24%
Answer:
He
, Question: earth's crust consists of
Answer:
O, Si, Al, Fe, Ca
Question: O, C, and h account for over ....% of the human body
Answer:
90%
Question: Does a substance in a mixture maintain its chemical identity
and properties?
Answer:
yupp
Question: What is a component?
Answer:
A component is a substance making up a mixture
Question: Mixtures that vary in texture/ appearance (like that of wood or
rock) are called
Answer:
heterogeneous mixtures
Question: Mixtures that are uniform throughout (like: Air, which has N,
O2, and other gases) are called
Answer:
homogeneous mixtures, although there are multiple elements, the individual elements
like N is pure and contains the same Nitrogen atoms like every other N atom. These
mixtures are also referred to as solutions.
Question: Is the inside of a grapefruit hetero or a homogeneous
mixture?
Answer:
hetero
Question: Can a physical property of matter be observed w/o changing
the identity and composition of a substance (like: color, oder,
density, melting point, hardness...)
Answer:
yes
Update 2026/2027
Question: Chemistry is the study of
Answer:
the properties and behaviors of matter
Question: Matter is ..
Answer:
the physical material of the universe, it is anything that has mass and occupies space
Question: A property is
Answer:
any characteristic that allows us to recognize any type of matter and to distinguish it from
other types
Question: Matter is typically found as a
Answer:
mixture of two or more substances; it is comprised of roughly 100 substances called
elements
Question: How is matter characterized by?
Answer:
1. its physical state (gas, liquid, a solid0
2. its composition (whether it is an element, a compound, or a mixture)
Question: What is an element?
Answer:
An element is a substance that cannot be decomposed into a simpler substance. They are
composed of one atom and each element is composed of a unique kind of atom.
Question: What is an atom?
Answer:
An atom is the smallest representative particle of an element. They are the small building
blocks of matter.
,Question: What do the properties of matter relate to?
Answer:
The properties of matter relate to the composition (type of atom contained) and to the
structure (the arrangement) of atoms.
Question: What are molecules?
Answer:
Question: What are the three states of matter?
Answer:
1. gas (vapor)- has no fixed volume or shape; rather it uniformly fills its container. Can be
compressed into a smaller place or occupy a large space
2. liquid- has a distinct volume independent of its container, assumes the shape of the
portion of the container it occupies, and is not compressible to any appreciative extent
solid- has both a definite shape and a definite volume and is not compressible to any
appreciable extent
Question: In which of the three states do molecules move fastest?
Answer:
in the gas state and slowest in the solid state
Question: Why can people pour water?
Answer:
b/c in a liquid the molecules are moving fast and slide over one another
Question: molecules in a solid cannot move much, they are
Answer:
seemingly fixed
Question: What is a pure substance?
Answer:
A pure substance is matter that has distnct properties and a composition that does not
very from sample to sample (ex. Sodium dichloride, Sodium Chloride- salt)
elements and compounds can be a pure substance
,Question: All substances are
Answer:
elements or compounds
Question: What is a compound?
Answer:
Substances that consist of at least two different types of atoms (elements). (ex. water
H2O)
Question: Mixtures are
Answer:
Question: What is a solution?
Answer:
Question: Are homologous mixtures and solutions the same thing?
Answer:
yes, the words are essentially interchangeable
Question: How many known elements are there..about?
Answer:
118
Question: The Milky Way Galaxy contains 74% H and 24%
Answer:
He
, Question: earth's crust consists of
Answer:
O, Si, Al, Fe, Ca
Question: O, C, and h account for over ....% of the human body
Answer:
90%
Question: Does a substance in a mixture maintain its chemical identity
and properties?
Answer:
yupp
Question: What is a component?
Answer:
A component is a substance making up a mixture
Question: Mixtures that vary in texture/ appearance (like that of wood or
rock) are called
Answer:
heterogeneous mixtures
Question: Mixtures that are uniform throughout (like: Air, which has N,
O2, and other gases) are called
Answer:
homogeneous mixtures, although there are multiple elements, the individual elements
like N is pure and contains the same Nitrogen atoms like every other N atom. These
mixtures are also referred to as solutions.
Question: Is the inside of a grapefruit hetero or a homogeneous
mixture?
Answer:
hetero
Question: Can a physical property of matter be observed w/o changing
the identity and composition of a substance (like: color, oder,
density, melting point, hardness...)
Answer:
yes
