Planned legislation restricting work with chemicals

This article is about the new dutch “NPS Wetgeving“.

This is a step back in time, if we learn anything from history it is that blindly banning groups of psychoactive substances, will only stimulate the black market.
Not only is the introduction of this law going to produce the opposite of the desired results in terms of crime and health, but it will also hinder research into the promising possibilities for the clinical use of these substances for therapeutic or other medicinal purposes.
Finally, this is also an image damage for our country, where the Netherlands used to be known as a forerunner and an example in the field of freedom and openness towards psychoactive substances, we will take a big step back. There will be no winners from implementing this change, only losers.

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NYS Chemistry Regents Review Practice – Acids, Bases & Salts

Base your answers to questions 13, 14 and 15 on the information below:

A laboratory worker filled a bottle with a hydrochloric acid solution. Another bottle was filled with methanol, while a third bottle was filled with a sodium hydroxide solution. However, the worker neglected to label each bottle. After a few days, the worker could not remember which liquid was in each bottle. The worker needed to identify the liquid in each bottle. The bottles were labeled A, B, and C. Using materials found in the lab (indicators, conductivity apparatus, and pieces of Mg metal), the worker tested samples of liquid from each bottle. The test results are shown in the table below.

Table of Tests and Results


Test Results

Bottle A

Bottle B

Bottle C

Methyl orange indicator




Bromthymol blue indicator




Electrical conductivity




Reactivity with Magnesium metal

No reaction

No reaction


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Regents Chemistry & The Scientific Method

1.Regents Chemistry is the study of matter and the changes that matter undergoes.

Pure chemistry is chemistry done for the sake of gaining new information. An example would be any type of research, such as an analytical chemist determining the composition of an unknown compound, or a biochemist determining the chemical structure of a newly discovered virus.

Applied chemistry is chemistry done to improve our lives. It does not discover new information about chemistry, but makes practical use of existing chemical knowledge. An example would be manufacturing rayon or nylon (synthetic fibers) and producing clothes.
2. The five divisions of chemistry are

a. organic chemistry – the study of carbon based compounds – includes plastics, rubbers, petroleum products and many synthetic fibers – rayon, nylon etc.

b. inorganic chemistry – the study of compounds which do not contain carbon – acids, bases, salts etc.

c. analytical chemistry – studies the composition of substances – used extensively in research and forensics

d. physical chemistry – determines and describe the physical structure of matter to explain why it behaves the way it does

e. biochemistry – studies the composition and the changes in composition of the matter which makes up living things

3. Two basic assumptions that make the endeavor of science possible are

a. the world is uniform – the laws of nature are consistent over space and time

b. humans have the capacity for understanding the world

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