5.3 Molecules, Elements and Compounds and Naming

What is the term for combining 2 or more non-metal atoms together?

• atoms

• elements

• molecules

• compounds

Tags

NGSS.MS-PS1-1

Are these molecules elements or compounds?

• Element

• Compound

Tags

NGSS.MS-PS1-1

Are these molecules also elements or compounds?

• Element

• Compound

Tags

NGSS.MS-PS1-1

When a metal atom loses electrons, it becomes this type of ion.

• anion

• cation

When a non-metal gains electrons, it becomes this type of ion.

• Anion

• Cation

Hydrogen is a pure substance represented by the chemical symbol H₂. Which of the following best describes hydrogen?

• Hydrogen is an element made of two or more different type of atoms.

• Hydrogen is a compound made of only one type of atom.

• Hydrogen is a compound made of two or more different types of atoms.

• Hydrogen is an element made of only one type of atom.

Tags

NGSS.MS-PS1-1

Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom. Which term best describes carbon dioxide?

• atom
• mixture
• element
• compound

Tags

NGSS.MS-PS1-1

What is the picture displayed?

• atom

• element

• molecule

Tags

NGSS.MS-PS1-1

Which of the following is NOT an ionic compound:

• CaO
• NaOH
• BaCl₂
• Br₂

Tags

NGSS.HS-PS1-3

Which of the following is an ionic compound:

• CH₄

• I₂

• LiBr₂

• CO