What are the three states of matter mentioned in the video?

• Liquids, gases, and plasma

• Solids, gases, and plasma

• Solids, liquids, and plasma

• Solids, liquids, and gases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the smallest unit of matter that cannot be broken down further?

• Molecule

• Atom

• Compound

• Element

Which of the following is a correct chemical symbol for an element?

• AL

• Al

• al

• aL

What is the chemical symbol for gold?

• G

• Au

• Go

• Ag

What is a molecule?

• A type of compound

• A type of element

• A single atom

• A combination of two or more atoms

Tags

NGSS.MS-PS1-1

Which gas is commonly used in disinfectants and has a distinctive smell?

• Oxygen

• Nitrogen

• Chlorine

• Carbon dioxide

What is a compound?

• A single element

• A new material formed by chemically combining two or more elements

• A type of molecule

• A mixture of elements

What is the chemical formula for water?

• O2H

• H2

• H2O

• HO2

Tags

NGSS.MS-PS1-1

What is the main difference between elements and compounds?

• Elements are made of one type of atom, while compounds are made of two or more types of atoms chemically joined together

• Elements are larger than compounds

• Compounds are made of one type of atom, while elements are made of two or more types of atoms chemically joined together

• Elements and compounds are the same

Which of the following gases exist as single atoms?

• Carbon dioxide and water vapor

• Hydrogen and oxygen

• Neon and argon

• Oxygen and nitrogen