Why should scientists perform experiments? A. To understand a hypothesis B. To answer questions about right and wrong C. To answer specific questions D. To impress their coworkers

Looking at group 2A of the periodic table, which of these element probably has the lowest ionic radius?

What happens to the oxygen that is produced as a result of photosynethesis

What type of reaction is the generic equation a + bc → ac + b?

Match the vocabulary word with its definition. Match the items in the left column to the items in the right column. 1. A charged atom or particle valence electrons 2.

A person driving a car applies the brakes. This produces friction, which stops the car. Into which type of energy is the mechanical energy of the car converted? A. heat B. gravitational C. light D. chemical

Provide three different types of examples of how minerals form on earth

Which element has the lowest electronegativity? Calcium (Ca) Gallium (Ga) Selenium (Se) Bromine (Br)

Which of the following organs are found in the circulatory system? * A.) Heart B.) Veins C.) Arteries D.) Capillaries E.) All of the above

What's the difference between volcano and vent

A marshmallow has an initial volume of 0.084 L at standard pressure (1.0 atm). If the marshmallow is placed in a vacuum chamber and the final volume is 0.785L, what is the pressure inside the chamber?