Understanding Atoms and Their Properties

What is the basic unit of matter that cannot be broken down further by chemical means?

• Molecule

• Atom

• Compound

• Element

Which term describes a force that joins two atoms together in a molecule or compound?

• Chemical bond

• Subscript

• Chemical formula

• Element

What does a chemical formula show?

• The number and types of atoms in one unit of a substance

• The order of elements in the periodic table

• The mass of a molecule

• The color of a compound

Tags

NGSS.MS-PS1-1

What is a chemical symbol?

• A chart of all elements

• A one- or two-letter representation of an element

• The number of atoms in a molecule

• The force joining atoms

Which of the following best defines a compound?

• A substance made of only one type of atom

• A substance composed of two or more elements bonded in a specific ratio

• A single atom

• A chart of elements

What is an element?

• A particle made of two or more atoms

• A substance made of only one type of atom

• A group of molecules

• A chemical formula

Which term refers to a particle composed of two or more atoms joined together?

• Atom

• Molecule

• Subscript

• Element

Tags

NGSS.MS-PS1-1

What is the periodic table?

• A list of chemical formulas

• A chart that organizes the chemical elements by their similar properties

• A group of molecules

• A type of chemical bond

In a chemical formula, what does the subscript indicate?

• The type of chemical bond

• The number of atoms or groups of atoms in one unit of the substance

• The color of the element

• The order of elements in the periodic table

Which of the following is NOT a correct definition based on the provided text?

• Atom: the basic unit of matter that cannot be broken down further by chemical means

• Molecule: a chart that organizes the chemical elements by their similar properties

• Compound: a substance composed of two or more elements whose atoms are bonded in a specific ratio

• Chemical symbol: a one- or two-letter representation of an element

Tags

NGSS.MS-PS1-1