Atoms, Elements, Compounds

A pure substance made of only one kind of atom and cannot be broken down into simpler substances

• Atom

• Compound

• Element

• Molecule

What is the term for combining 2 or more DIFFERENT atoms together?

• atoms

• elements

• molecules

• compounds

Tags

NGSS.MS-PS1-1

Which describes a pure substance? (Select all that apply.)

• Looks the same from every part you look 

• Looks different from every part you look

• Either an element or a compound

• Either an element or a mixture

Tags

NGSS.MS-PS1-1

Elements

• are made of two or more types of atoms chemically bonded together

• are made of one type of atom

• are made of two or more types of molecules combined in the same space

• are always individual atoms

Tags

NGSS.MS-PS1-1

Which is the smallest particle of an element that has the same properties as that element?

• atom

• molecule

• electron

• neutron

Tags

NGSS.MS-PS1-1

A substance that cannot be broken down further chemically is known as...

• an element

• a compound

• a molecule

• a mixture

Tags

NGSS.MS-PS1-1

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes

• neutrons, isotopes, and electrons

• positives, negatives, and electrons

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

H₂O is most accurately described as a ___________________.

• molecule

• compound

• element

• atom

Tags

NGSS.MS-PS1-1

The region of negative charge surrounding an atomic nucleus

• nucleus

• electron cloud

• atom

• matter

Tags

NGSS.MS-PS1-1

the small, dense region consisting of protons and neutrons at the center of an atom

• nucleus

• electron cloud

• atom

• matter