Chapter 2.1/2.2 Quiz

Which particles are found in the nucleus of an atom according to the diagram?

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

• Only electrons

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What is the charge of an electron?

• Positive (+)

• Neutral (0)

• Negative (-)

• Both positive and negative

Where are electrons located in an atom?

• Inside the nucleus

• In energy levels outside of the nucleus

• In the center of the atom

• Attached to protons

Which statement best describes the motion of electrons?

• Electrons are stationary inside the nucleus.

• Electrons are constantly in motion in energy levels outside the nucleus.

• Electrons move only when energy is added.

• Electrons are fixed in one place.

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What is the atomic number for Carbon?

• 6

• 8

• 12

• 16

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Why do all isotopes of an element have the same chemical properties?

• Because they have the same number of electrons

• Because they have the same number of neutrons

• Because they have the same number of protons and neutrons

• Because they have different numbers of protons

Tags

NGSS.HS-PS1-1

What does chemical bond formation involve?

• The electrons that surround each atomic nucleus.

• The protons inside the atomic nucleus.

• The neutrons inside the atomic nucleus.

• The mass of the atom.

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What happens when the same atoms are joined together by covalent bonds?

• Molecules are formed

• Ions are formed

• Metals are formed

• Salts are formed

Tags

NGSS.HS-PS1-1

How do hydrogen bonds compare in strength to covalent or ionic bonds?

• Hydrogen bonds are stronger than covalent or ionic bonds.

• Hydrogen bonds are as strong as covalent or ionic bonds.

• Hydrogen bonds are not as strong as covalent or ionic bonds.

• Hydrogen bonds are the same as covalent bonds.

Which of the following is an example of cohesion?

• Water molecules being drawn together.

• Oil mixing with water.

• Salt dissolving in water.

• Sugar melting in heat.