2.1 Quiz- Structure of Matter

What is an atom?

• Atoms are protons.
• Atoms are not the basic unit of matter.
• Atoms are the basic unit of matter.

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NGSS.MS-PS1-1

What are the three subatomic particles of an atom? (more than one answer).

• proton
• atom
• neutrons
• electron

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What are protons?

• negatively charged particles located in the nucleus.

• positively charged particle located in the nucleus.

• positively charged particles located outside the nucleus.

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What are electrons?

• negatively charged particles located outside the nucleus.

• negatively charged particle located in the nucleus.

• positively charged particles located outside the nucleus.

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NGSS.MS-PS1-5

An element is a pure substance composed of only _________ of atom.

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Atoms of the same element that differ in the number of neutrons they contain are called _________________.

• Atoms
• isotopes
• neutrons

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The atomic number is the same number as

• protons and neutrons
• neutrons and electrons
• protons and electrons

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NGSS.HS-PS1-7

How many electrons in boron, which mass is 11?

• 5
• 6
• 11

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NGSS.MS-PS1-1

How many neutrons in potassium (K)?

• 19
• 20
• 58

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A chemical compound is a substance formed by the chemical combination of____________ elements in definite proportions.

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