How does an atom become an ion with a - 2 charge?

Determine the y component of reaction at a using scalar notation. express your answer to three significant figures and include the appropriate units.

Which are examples of habitat destruction? Check all that apply

Which of the following has the smallest heat capacity?

How many core electrons does magnesium (Mg) have?

Let's say we have 2 Zinc atoms and 2 Sulfur atoms on one side of the equation. According to the Law of Conversation and Mass, how many Zinc Sulfide molecules would be on the other side of the equation?

How is the partial pressure of a gas in a mixture calculated?

Part II. Formulas From Names Write the chemical formula of the covalent compounds below. 11. Carbon dioxide CO2

Spell out the full name of the compound Cl2O7

True or False. When covalent bonds are formed between atoms having different electronegativities, the electrons tend to spend less time at the atom with the greater electronegativity. Such chemical bonds are called polar covalent bonds.

How many protons are in an element