At STP, which element is solid, brittle, and a poor conductor of electricity?

(1) Al (3) Ne

(2) K (4) S

Find change H for the reaction as it occurred in the calorimeter.

How many significant figures are in 0.00523980 mL? 4 5 3 6 7

State the number one way of increasing the solubility of a substance and explain why it has that effect. Also, explain two ways that you can increase the rate of dissolving for substance.

Which is an example of pseudoscience?

Which of the following polyatomic ions will form an ionic compound with a single sodium ion? CO32- HCO31- SO42- SO32-

Electrons located in the outermost shell of an atom are called

Sentence for death rate

What two forces cause the arc-shape of projectile motion?

Why are some mystery elements easier to identify than others?

Which of the following processes is exothermic (heat or energy is released) ? A) ice melting in a beverage B) dry ice (solid CO2) converting to a gas at room temperature C) evaporation of water from a mud puddle D) burning propane in a barbeque