Brainpop ions

Which of the following is a true statement about atomic nuclei?

• The atomic nucleus has no relation to an atom's mass

• They are made up of protons, neutrons, and electrons

• Every atomic nucleus has the same number of particles

• They have a net positive charge

Tags

NGSS.HS-PS1-8

How do the inner electron shells of an atom differ from the outer electron shells?

• The electrons in the outer shells orbit the nucleus at slower speeds

• The electrons in the outer shells have negative charges; the electrons in the inner shells have positive charges

• Electrons in the inner shells are gained and lost more frequently than electrons in the outer shells

• The outer shells can hold more electrons than the inner shells

An atom with one electron in its valence shell will tend to:

• Accept protons from other atoms

• Accept electrons from other atoms

• Become negatively charged

• Become positively charged

Cations tend to have:

• Positive valence

• Negative valence

• Neutral valence

• High valence

Fluorine is an element located on the right side of the periodic table of elements. What can you conclude about fluorine from this fact?

• It tends to form cations

• It tends to have a positive valence

• Its valence shell is nearly full

• It tends to donate electrons to other atoms

What can you infer about elements located in the middle of the periodic table?

• They tend to have very large atomic masses

• They tend to form ions less frequently than elements on the edges of the table

• They tend to have completely full valence shells

• They tend to have positive charges

Which of the following is a true statement about ions?

• Gaining and losing protons requires less energy than gaining and losing electrons

• Removing an electron from an atom requires energy

• When an atom gains an electron, it loses energy

• No energy is transferred when an atom gains or loses an electron

Tags

NGSS.MS-PS2-3

NGSS.MS-PS3-5

Which statement best describes why sodium and chlorine form bonds so frequently?

• Objects in motion tend to remain in motion

• A closed system can neither gain nor lose energy

• What goes up must come down.

• Opposites attract

Tags

NGSS.HS-PS1-3

Water is sometimes described as the "universal solvent." From the information presented in the movie, what can you infer about this nickname?

• It means that water can break the bonds that hold many substances together

• It means that water usually has a neutral charge

• It means that water dissolves electrons

• It means that water can make dangerous substances harmless

Tags

NGSS.MS-PS1-2

How is table salt (sodium chloride) different than the ions that make it up?

• It contains no electrons.

• It has a neutral charge

• It has a net negative charge

• It has a net positive charge

Tags

NGSS.MS-PS1-1