To become a negative ion, does an atom lose or gain an electron?

(a) What is a chemical bond?

(b) What is an ionic bond?

(c) Why is an ionic bond a type of chemical bond?

The concept of a chemical bond is _____.

What is a valence shell?

If a Mack truck and a MiniCooper have a head-on collision, which vehicle experiences the greater force of impact? The greater impulse? The greater change in momentum? The greater deceleration?

Approximately how many atoms are present in a gram of water?

What is the evidence that dark matter exists?

Larry weighs $300 \mathrm{~N}$ at the surface of Earth. What is the weight of Earth in the gravitational field of Larry?

How does an ion vary from an atom?

Your friend says that what makes one element distinct from another is the number of electrons around the atomic nucleus. Do you agree wholeheartedly, partially, or not at all? Explain.

The planet (M) and its moon (m) gravitationally attract each other. Rank the forces of attraction between each pair, from greatest to least. A- M-m (distance between M and m is d) B- 2M-m (distance between 2M and m is d) C- M- 2m (distance between M and 2m is d) D- M-2m (distance between M and 2m is 2d)

What element results if two protons and two neutrons are ejected from a radium nucleus?

What occurs when a particle of matter and a particle of antimatter meet?

What element results if you add a pair of protons to the nucleus of mercury?