Which of the following elements are in the same period in the periodic table?

A) Li & Ne

B) H & Li

C) Li & Mg

D) Ne & Mg

Which field of science studies the composition and structure of matter? a. physics c. chemistry b. biology d. geology

To what pressure must a gas be compressed in order to get into a 3.00 cubic foot tank the entire weight of a gas that occupies 400.0 cu. ft. at standard pressure?

The presidential election of 1928 pitted Al Smith of New York against A. Bob La Follette. B. Theodore Roosevelt. C. Herbert Hoover. D. John W. Davis.

You have three molecules of glucose (3C6H12O6). How many carbon atoms do you have? A. 3 B. 6 C. 18 D. 36 **MY answer: C. 18 Which of the following is a homogenous mixture of two or more pure substances? A. oxygen B. water C. air D.

What results from gas particles not having a strong attraction to one another? Select all that apply. fixed volume variable volume fixed shape variable shape

Why does water vapor exist naturally in the atmosphere

How is the volume of a gas related to its concentration of particles? As the volume of a contained gas expands, its pressure concentration of particles will increase.

How does the density of one penny compare with the density of two pennies

How many valence electrons does beryllium have

How does the arm wrestling tournament represet what Rutherford found out about the positive and negative charges and atom