The elements in Group 2 have similar chemical properties because each atom of these elements has the same

(a) atomic number

(b) mass number

(c) number of electron shells

(d) number of valence electrons

In the reaction, if you start with 4 H2O2, how much O2 will you end up with? a. 4c. 2 b. 3d. 1

Procedure in which a solution of known concentration is reacted with a solution of unknown concentration in order to determine the concentration of the unknown solution

A charge of 5.0 coulombs moves through a circuit in 0.50 second. What is the current in the circuit?

Name the five practices that are part of the scientific inquiry process.

A person who is interested in learning more about how glands produce and release hormones might pursue a career in A reproductive science B gene therapy C neuroscience D endocrinology

What are some reasons why the research should be put through a peer-review process?

Which of the following examples is a compound containing an ionic bond? A. O2 B. H2O C. CaO D. CH4

How many moles of a gas will occupy 2.50L at STP

Which has more kinetic energy, a small sports car traveling at 30 km/hr or a large tractor-trailer traveling at 75 km/hr?

A Lay's potato chip weighing 4.03g is put into a bomb calorimeter containing 895.5g of water at 25.10°C. If this increases the temperature of the surrounding water to 48.89°C, what is the amount of calories per serving if 1 serving = 28.38g.