According to the periodic table, lithium and nitrogen have the same number of

a. protons.

b. electrons.

c. electron energy levels.

d. protons plus neutrons.

What do magnets and subatomic particles have in common?

If you reacted 93.7 grams of iron with excess copper sulfate solution, what mass of copper would you expect to make? You may need to balance the equation first. Fe + CuSO4 - > Cu + FeSO4 A. 89.18 grams B. 106.25 grams C. 1.67 grams D. 104.5 grams

A student uses 0.0821 L• atm/mol • K as the value of the gas constant. What is most likely true about the variables in the ideal gas law?

How did the results of J. J. Thompson's experiments change how scientists thought about atoms?

What is the process used for extracting metals from ores? A. ore B. s. lag C. alloy D. smelting

Given the propane molecule C3H8 (g) ! a) What is the balanced equation for the combustion of propane in O2? (20 pts.) b) What is the standard enthalpy change ΔH0 for the reaction at 25°C? (20 pts.

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.

Which has more inertia: a kilogram of cotton balls or a kilogram of gold?

Democritus who lived in greece during the fourth century b. c suggested that matter is made up of tiny particles that cannot be divided. what did he called them

What is the root mean square of carbon iv oxide at 27°C?