== == They are all physical properties - they are measures of physical changes.
The key property of a physical change is that no intramolecular bonds are made or broken. Intra- meaning within, refers to intramolecular forces that hold a molecule to itself. So for example, a single molecule of the salt, sodium chloride (NaCl) is held together by intramolecular bonds. A grain of salt, for example, is comprised of many molecules of NaCl. When you boil, melt or freeze many molecules of NaCl, you are only changing how each molecule interacts with one another; you are not changing the molecular composition. These interactions depend on intermolecular bonds/forces.
Physical change affects only the intermolecular forces, also called Van Der Waals forces, between atoms and molecules (inter- meaning between).
"Intermolecular Forces are electrostatic forces of attraction that exist between an area of negative charge on one molecule and an area of positive charge on a second molecule." From strongest to weakest, these are: hydrogen bonding > dipole interactions> London Dispersion Forces.
Certainly rt-PCR is qualitative and can also theoretically be quantitative. Anneal the RNA to get a 1:1 RNA to DNA copy, then proceed with quantitative PCR.
Quantitative observation involves measurements or numerical data, while qualitative observation involves descriptions based on qualities such as color, shape, or texture. Quantitative observations are often objective and precise, whereas qualitative observations are more subjective and descriptive in nature.
the terms odorless ad colorless are quantitative terms
Social Security numbers are quantitative and not qualitative. This is due to the fact that they are numerical in nature.
If I had a 25% solution of sodium chloride and I did a quantitative measurement, the interest would be in HOW MUCH was present. In this case it would be 25%. If I did a qualitative measurement, all we would be interested in is - WHAT IS PRESENT. In this case sodium chloride and water. In simple terms, qualitative is "What is present" and quantitative is "How much is present"
qualitative
qualitative = how good something is quantitative= how much of it there is
PH is a number, so it is quantitative.
Date of birth is Qualitative, but age is Quantitative.
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It is quantitative because it is numerical
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what is the difference between qualitative and quantitative