Chemistry Questions

The periodic table is a tabular arrangement of what?

• Chemical elements

• Mathematical formulas

• Historical events

• Geographical locations

What is the atomic number (what does it tell us)?

• The number of protons in an atom

• The number of neutrons in an atom

• The number of electrons in an atom

• The atomic mass of an atom

An atom is the smallest unit of matter. Can it be divided?

• Yes, it can be divided into smaller particles without chemical properties.

• No, it cannot be divided further unless it is above atomic number 50.

• It can be divided only under specific conditions and KEEP chemical properties.

• It is indivisible on all conditions.

Tags

NGSS.HS-PS1-8

What are the charges on protons, neutrons, and electrons?

• Protons are positive, neutrons are neutral, and electrons are negative.

• Protons are negative, neutrons are positive, and electrons are neutral.

• Protons are neutral, neutrons are negative, and electrons are positive.

• Protons are negative, neutrons are neutral, and electrons are positive.

How do atoms compare in size to cells? How do cells compare in size to an organism (multicellular)?

• Atoms are smaller than cells, and cells are smaller than a multicellular organism.

• Atoms are larger than cells, and cells are larger than a multicellular organism.

• Atoms and cells are the same size, but both are smaller than a multicellular organism.

• Atoms are smaller than cells, but cells are larger than a multicellular organism.

What is a molecule? How many atoms are required?

• A molecule is a group of two or more atoms bonded together.

• A molecule is a single atom.

• A molecule is a type of chemical reaction.

• A molecule is a type of energy.

Tags

NGSS.MS-PS1-1

What is an element?

• A substance that cannot be broken down into simpler substances

• A compound made of different atoms

• A mixture of various substances

• A type of molecule with complex structure

What is a compound?

• A substance formed from two or more elements chemically bonded together

• A single element in its pure form

• A mixture of different substances not chemically bonded

• A type of molecule found only in living organisms

Tags

NGSS.MS-PS1-1

How do elements differ from compounds?

• Elements are pure substances consisting of only one type of atom, while compounds are substances formed from two or more different types of atoms bonded together.

• Elements are always found in nature, while compounds are always man-made.

• Elements can be broken down into simpler substances, while compounds cannot.

• Elements are always metals, while compounds are always non-metals.

What is a (chemical) family?

• A group of elements with similar properties

• A single element with unique properties

• A compound formed by chemical reactions

• A mixture of different substances