Atoms, Elements, Compounds, & Mixtures Article Questions

The atomic number is the number of ____________ in an atom.

• protons

• neutrons

• morons

• electrons

What are the two subatomic particles found inside the nucleus?

• protons and electrons

• neutrons and protons

• electrons and neutrons

• protons and ions

Which two subatomic particles have approximately the same mass?

• protons and electrons

• protons and neutrons

• neutrons and electrons

• electrons and ions

According to the article, which scientist was first to develop a system of describing an atom? Write your response in a complete sentence.

After reading the passage, how can you classify steel?

• compound

• element

• mixture

• electron

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NGSS.MS-PS1-1

What element is steel mainly composed of?

• Fe

• C

• Mg

• Ag

What is the primary different between a molecule and a compound?

• All molecules are compounds, but not all compounds are molecules.

• Molecules always contain only one type of atom, unlike compounds.

• Compounds must be composed of more than one type of atom.

• Molecules must be composed of more than one type of atom.

Tags

NGSS.MS-PS1-1

According to the article, an alloy is defined as:

Tags

NGSS.MS-PS1-1

How is MATTER defined in this article?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

The compound NaCl is known to most people as _____________.