What is the difference between atom and compound? explain.

Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?

What type of reaction is this? 2 A1203 (s) + 4 Al (s) + 3 O2 (g)

What is the frequency of a wave with a wavelength of 6.40 x 104 meters?

What is the charge of an ion with p=9 n=10 e=10?

Which of the following is not a trait of gases? a. fluidity b. low density c. capable of effusion d. tightly packed particles

Calculate the volume of 1 M NaOH needed to prepare 10.0 ml of a 0.10 M solution.

Which best describes why NH4 + can form an ionic bond with CL-?

Select the correct answer from each drop-down menu. Plants use sunlight to convert nutrients into energy. What form of energy transfer is taking place? The energy of the Sun is converted into energy by the plants.

How many minutes would it take a radio wave to travel from venus to earth?

The table describes how some substances were formed. P - Formed by boiling water Q - Formed by combining three hydrogen atoms to every nitrogen atom R - Formed by adding 5 g of sugar to 1 L of water S - Formed by compressing carbon under high