Atoms release energy when_

A. electrons move to a lower energy level

B. electrons move to a higher energy level

c. protons move to a higher energy level

D. protons move to a lower energy level

What is the correct name for the n3 - ion? nitride ion nitrogen ion nitrite ion nitrate ion

Substances that are created and come out of a chemical reaction

Which statement describes how a basic coffee cup calorimeter works? a) It measures the mass of a substance given the specific heat and temperature of water in a cup of known size.

Which is the weakest type of attractive force between particles? 1. dispersion forces 2. ionic bond 3. hydrogen bond 4. covalent bond

What are the differences between metals, nonmetals, and metal looks in the periodic table?

Which of these conclusions can be drawn from Rutherford's experiment? A: Each atom contains electrons. B: The nucleus of an atom can be split. C: Each atom contains protons. D: Atoms are mostly empty space.

Describe one major laboratory accident mentioned in the training presentation, what chemicals were involved, the type of PPE that was worn at the time of the accident, and how it could have been prevented.

Which process creates food for plants in order to maintain homeostasis? Breathing Cell division Cellular respiration Photosynthesis

Describe a proton, neutron, and electron. Where are these particles located inside an atom.

A sample of gas is at 273°K and 2.00 atm with a volume of 6.00 liters. When the gas is compressed to 3.00 liters and the pressure increases to 3.00 atm, what is the new temperature of the sample?