a change from one state of matter to another involves the transfer of what? heat, atoms, phases, or density.

Louis pasteur developed the germ theory of disease. true or False

Would a solution of baking soda turn pH paper red or blue? Explain your answer in terms of pH.

For an atom to be electrically neutral the number

What are chemical properties (Apex) A. Properties that can change the chemical nature of matter B. The difference between a substance and a mixture C. The difference between a heterogeneous and a homogeneous mixture D.

An aqueous solution in a 55 gallon (208 l drum), characterized by minimal buffering capacity, received 4kg of phenol and 1.5 kg of sodium phenate. What is the ph of the solution. The pka of phenol = 9.98.

In the formula for the compound xcl4 the x could represent

What is the main function of antibodies? A: "Remembering" the characteristics of germs that have invaded your body in the past B: Creating new white blood cells C: binding themselves to invading antigens D:Signaling your immune system that antigens

In the reaction 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq), which substance is reduced? A. H2O B. Cl C. H D. OH E. None of the Above (This is not a redox reaction.)

Which statements about the periodic table's organization are true? Select all that apply. The periodic table is organized by atomic number. The periodic table is organized by reactivity. The periodic table is organized by atomic mass.

He definition "'oxygen' means an element having an atomic weight of 8 and an atomic number of 16" is an example of: