Atoms, Elements, and Compounds

What is the main objective of the lesson "Atoms, Elements, and Compounds"?

• To understand the structure of the Earth

• To explain the differences among atoms, elements, and compounds

• To learn about the water cycle

• To study the history of chemistry

Tags

NGSS.MS-PS1-1

What makes up the air we breathe?

• Only atoms

• Only molecules

• Atoms and molecules

• Only gases

Tags

NGSS.MS-PS1-1

What can a substance be classified as?

• An element or a compound

• A molecule or a mixture

• A solid or a liquid

• A gas or a plasma

What is an element?

• A substance with two or more types of atoms

• A substance with only one type of atom

• A mixture of different molecules

• A combination of compounds

What does the chemical symbol 'O' represent?

• Hydrogen

• Oxygen

• Carbon

• Nitrogen

What is the chemical formula for Vitamin C?

• C6H8O6

• H2O

• CO2

• O2

Tags

NGSS.MS-PS1-1

What determines the properties of a substance?

• A. The number and types of atoms in the molecules

• B. The color of the substance

• C. The temperature of the substance

• D. The shape of the substance

Tags

NGSS.MS-PS1-1

Why do oxygen (O₂) and ozone (O₃) have different properties?

• A. They have different colors

• B. They have different numbers of oxygen atoms

• C. They are found in different places

• D. They have different temperatures

Tags

NGSS.MS-PS1-1

Look at the image of a nutrition label. Which ingredients might be elements, and which might be compounds?

• Elements: Vitamin A, Compounds: Iron

• Elements: Calcium, Compounds: Vitamin C

• Elements: Iron, Compounds: Vitamin A

• Elements: Potassium, Compounds: Sodium

Tags

NGSS.MS-PS1-1

Which element is represented by the color blue in the amino acid model?

• Hydrogen

• Nitrogen

• Carbon

• Oxygen

Tags

NGSS.MS-PS1-1