basic chemistry

A covalent bond forms

• when one or more electrons are transferred from one atom to another.

• when electrons are shared between atoms.

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When is an ionic bond formed?

• when electrons are shared

• when protons are shared

• when ions of opposite electrical charges attract each other

• when a positive hydrogen attracts a negative atom in another molecule

Which two subatomic particles are found in the nucleus of an atom?

• Neutrons and Protons

• Shells and Electrons

• Electrons and Protons

• Electrons and Neutrons

Which subatomic part of an atom gives it a positive charge?

• Neutron

• Proton

• Electron

• Nucleus

What is the smallest 'building block' of the elements that make up the universe?

• An atom

• An electron

• A proton

• A cell

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NGSS.MS-PS1-1

When is a hydrogen bond formed?

• when electrons are shared

• when protons are shared

• when ions of opposite electrical charges attract each other

• when a positive hydrogen attracts a negative atom in another molecule

Which two subatomic particles are found in the nucleus of an atom?

• Neutrons and Protons

• Shells and Electrons

• Electrons and Protons

• Electrons and Neutrons

Some molecules are compounds, but not ALL molecules are compounds.

• True

• False

H₂O

• is a compound but not a molecule

• is only a molecule and not a compound

• is a compound and also a molecule

• is neither a compound or molecule

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NGSS.MS-PS1-1

O₂ Gas

• is a compound

• is not a molecule

• is a solid

• is an example of a molecule, but not a compound

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NGSS.MS-PS1-1