Which of the following is an example of an endothermic process?

condensation

evaporation

burning

freezing

Which of the following types of energy does an object have because of its motion? Chemical energy Gravitational energy Kinetic energy Potential energy

What happens when the kinetic energy of molecules increases so much that electrons are released by the atoms, creating a swirling gas of positive ions and negative electrons?

You perform a combustion analysis on a 255mg sample of a substance that contains only C, H, and O and you find that 561 mg of Co2 is produced along with 306 mg of h20. What is the empirical formula

Which one has the largest atomic mass: K, Ca, or Sc

The process by which water is moved and changed through the earth is called

The atomic mass of fluorine in 19.0 amu, so the molar mass is?

A rod shaped organism with no nucleus commonly found in Garbage will most likely belong to which kingdom

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.

Four properties of water are listed. 1. It is colorless and odorless in its pure form. 2. It reacts with metals to form metal hydroxide and hydrogen gas. 3. When heated to 100 °C, water evaporates. 4. It decomposes to form hydrogen and oxygen.

Water is A. Acidic B. Basic C. Neutral