CHEM 101 | Questions with 100% Verified Answers | Latest
Update 2026/2027
Question: Hypothesis
Answer:
A tentative explanation of observations that acts as a guide for gathering and checking
information.
Question: Chemistry is a science based on:
Answer:
observation and experimentation
Question: What is true about atoms in a molecule?
Answer:
They move together with other atoms in the molecule. They move as a unit, like keys on a
single key ring.
Question: In a molecule of water, H2O, which statement is most correct?
1. A molecule of water is made up of individual water atoms.
2. A molecule of water is made up of two hydrogen atoms and
one oxygen atom.
3. A molecule of water is made up of one hydrogen molecule
and one oxygen molecule.
4. A molecule of water is made up of one hydrogen molecule
and one oxygen atom.
Answer:
2. A molecule of water is made up of two hydrogen atoms and one oxygen atom.
Question: Which of the following is a compound?
1. Water
2. Sodium
3. Chlorine
4. Oxygen
Answer:
Water
, Question: Which of the following is an element?
1. Water
2. Ammonia
3. Sodium
4. Carbon dioxide
Answer:
Sodium
Question: Which is the best example of a heterogeneous mixture?
1. Clam chowder
2. Water
3. Tea
4. Vinegar
Answer:
Clam chowder
Question: A beaker contains solid sand and liquid water. Which
statement describes the beaker's contents?
1. It is a pure substance, and the sand and water can only be
separated chemically.
2. It is a homogeneous mixture, and the sand and water can be
physically separated by filtration.
3. It is a heterogeneous mixture, and the sand and water can
be separated by filtration.
4. It is an element, and the sand and water cannot be
separated even chemically.
Answer:
3. It is a heterogeneous mixture, and the sand and water can be separated by filtration.
Question: Which describes a liquid?
1. Liquids have a fixed shape and volume.
2. Liquids take the shape of their containers.
3. Liquid particles have no attraction to one another.
4. Liquids expand to fill their containers completely.
Answer:
2. Liquids take the shape of their containers.
Update 2026/2027
Question: Hypothesis
Answer:
A tentative explanation of observations that acts as a guide for gathering and checking
information.
Question: Chemistry is a science based on:
Answer:
observation and experimentation
Question: What is true about atoms in a molecule?
Answer:
They move together with other atoms in the molecule. They move as a unit, like keys on a
single key ring.
Question: In a molecule of water, H2O, which statement is most correct?
1. A molecule of water is made up of individual water atoms.
2. A molecule of water is made up of two hydrogen atoms and
one oxygen atom.
3. A molecule of water is made up of one hydrogen molecule
and one oxygen molecule.
4. A molecule of water is made up of one hydrogen molecule
and one oxygen atom.
Answer:
2. A molecule of water is made up of two hydrogen atoms and one oxygen atom.
Question: Which of the following is a compound?
1. Water
2. Sodium
3. Chlorine
4. Oxygen
Answer:
Water
, Question: Which of the following is an element?
1. Water
2. Ammonia
3. Sodium
4. Carbon dioxide
Answer:
Sodium
Question: Which is the best example of a heterogeneous mixture?
1. Clam chowder
2. Water
3. Tea
4. Vinegar
Answer:
Clam chowder
Question: A beaker contains solid sand and liquid water. Which
statement describes the beaker's contents?
1. It is a pure substance, and the sand and water can only be
separated chemically.
2. It is a homogeneous mixture, and the sand and water can be
physically separated by filtration.
3. It is a heterogeneous mixture, and the sand and water can
be separated by filtration.
4. It is an element, and the sand and water cannot be
separated even chemically.
Answer:
3. It is a heterogeneous mixture, and the sand and water can be separated by filtration.
Question: Which describes a liquid?
1. Liquids have a fixed shape and volume.
2. Liquids take the shape of their containers.
3. Liquid particles have no attraction to one another.
4. Liquids expand to fill their containers completely.
Answer:
2. Liquids take the shape of their containers.
