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These are of course chemical reactions, for example oxydation.
What else can I help you with?
Why Mendeleev was able to observe periodicity?
mendeleev arranged elements according to atomic mass. He was able to observe periodicity when arranged in this pattern.
When categorizing element what reactions did Mendeleev observe?
Mendeleev observed the chemical properties and reactions of elements, particularly their reactivity with acids, bases, and each other. He noted trends in atomic mass and how elements with similar properties tended to recur at regular intervals, leading him to propose the periodic law. Mendeleev also recognized that certain elements could displace others in reactions, which helped him organize the elements into a periodic table based on these observed patterns and behaviors. His observations laid the groundwork for understanding the relationships between various elements and their chemical properties.
Why were some of the elements not predicted?
Some elements were not predicted because they were unstable and quickly decayed into other elements, making them difficult to observe or study. Additionally, some elements exist in very small quantities or under extreme conditions that were not present when the periodic table was initially created.
What apparatus used to observe reactions?
A common apparatus used to observe reactions is a laboratory beaker or test tube. These glassware allow for the observation of physical and chemical changes in substances during a reaction by noting changes in color, precipitation, gas evolution, or temperature. Other tools like spectrophotometers or microscopes may also be used to observe reactions at a more detailed level.
Why are exothermic reactions often easy to observe?
Exothermic reactions are often easy to observe because they release heat, leading to a noticeable increase in temperature of the surroundings. This temperature change can be felt directly or measured with a thermometer. Additionally, many exothermic reactions produce visible signs, such as light, color changes, or gas formation, making them more apparent during experiments. These characteristics make it straightforward for observers to identify and study these reactions.
Why Mendeleev was able to observe periodicity?
mendeleev arranged elements according to atomic mass. He was able to observe periodicity when arranged in this pattern.
When categorizing element what reactions did Mendeleev observe?
Mendeleev observed the chemical properties and reactions of elements, particularly their reactivity with acids, bases, and each other. He noted trends in atomic mass and how elements with similar properties tended to recur at regular intervals, leading him to propose the periodic law. Mendeleev also recognized that certain elements could displace others in reactions, which helped him organize the elements into a periodic table based on these observed patterns and behaviors. His observations laid the groundwork for understanding the relationships between various elements and their chemical properties.
Why were some of the elements not predicted?
Some elements were not predicted because they were unstable and quickly decayed into other elements, making them difficult to observe or study. Additionally, some elements exist in very small quantities or under extreme conditions that were not present when the periodic table was initially created.
How were you able to discover an element before the invention of modern instruments?
Before instruments were invented to aid in the discovery of different elements, the discovery of most elements was by accident. Madame Curie discovered uranium, but did not know at the time that it was radioactive.
How can you observe chemical reaction?
you can observe chemical reactions from its smell, colour, shape, or the change in it's properties
What chemical reactions have you observed?
You can observe burning, corrosion or precipitation.
What are two main kinds of changes that can observe when chemical reactions occur?
a precipitate is a solid that forms during a chemical reactions
How can a hypothesis be tested?
observe it ,when there is a quick reaction...compare the reactions in the problem you've been solving..
What apparatus used to observe reactions?
A common apparatus used to observe reactions is a laboratory beaker or test tube. These glassware allow for the observation of physical and chemical changes in substances during a reaction by noting changes in color, precipitation, gas evolution, or temperature. Other tools like spectrophotometers or microscopes may also be used to observe reactions at a more detailed level.
How can you tell the difference between synthesis decomposition or exchange reaction?
In synthesis reactions, two or more substances combine to form a new compound. In decomposition reactions, a single compound breaks down into simpler substances. In exchange reactions, atoms or ions in different compounds switch places to form new compounds. The key is to identify the number of reactants and products and observe how the elements rearrange during the reaction.
What two main kinds of change that you can observe when chemical reactions occur?
ripping a towel, or breaking a glass window
Two mains kinds of changes that you can observe when chemical reactions occur?
ripping a towel, or breaking a glass window
