Acid is added to a beaker containing crushed marble. What effect does stirring this mixture have on the system?

the surface area of the particles increases

the number of particle collisions increases

the energy of the collisions increases

Explain why organisms need to maintain homeostasis

What conclusion can be draw about the heat of fusion of water from the heating curve? A) The potential energy of fusion represents a greater change of stored energy. B) Liquid water is stabilized by strong intermolecular forces between the molecules.

Changes in DNA are known as mutations and can be sometimes produce beneficial changes in population. A mutant form of the normally light-colored peppered moth is dark-colored.

What kind of organic compounds do fats and oils represent?

Nitroglycerin (C3H5N3O9) can decompose and is represented by the following reaction: C3H5N3O9 = 6N2 + CO2 + H2O + O2 1. how much nitrogen in grams) forms when 500g of nitroglycerin decomposes? 2.

Mg is a member of which family? a) noble gases b) halogensc) alkaline earth metals d) alkali metalse) none of the above

How does an atom differ from a molecule?

Which of the following statements is true? a. Ag (s) reacts spontaneously with 1 M H + (aq). b. Ag (s) reacts spontaneously with Ni2+. c. Ag (s) reacts spontaneously with 1 M NO3 - in 1 M H + (aq). d.

A 2.950Ã-10âˆ'2 M solution of glycerol (C3H8O3) in water is at 20.0∘C. The sample was created by dissolving a sample of C3H8O3 in water and then bringing the volume up to 1.000 L.

Which substance can be decomposed by chemical means