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What is the name given to reactions which take in heat?
An endothermal (or endothermic) process is the name of the process in which heat is taken in. In an exothermal (or exothermic) process, heat is released.
What are two types of qualitative observations in chemistry?
Two types of qualitative observations in chemistry are color changes and precipitate formation. These observations do not involve numerical measurements but rely on characteristics such as color or appearance. They are useful in indicating chemical reactions or changes in a substance.
Is it true that lavoisier transformed science by making its focus on taking measurements instead of making observations?
Yes, Antoine Lavoisier did revolutionize science by emphasizing the importance of quantitative measurements in chemical reactions. He is considered the father of modern chemistry for his role in developing the law of conservation of mass and the metric system. While observations were still important, Lavoisier's emphasis on precise measurements laid the foundation for the scientific method as we know it today.
How did Lavoisier use the scientific method?
Lavoisier applied the scientific method by conducting systematic experiments, making detailed observations, and analyzing data to develop theories and explanations for chemical reactions. He emphasized the importance of precise measurements and reproducibility in his work, which laid the foundation for modern chemistry.
What name is given to all chemical reactions which releases heat energy?
Exothermic reactions produce heat. Endothermic reactions take in heat from the surrounding area and get cold.
Is the reaction to aluminum in the hendenburg exothermic or indothermic?
indothermic
What is the name given to reactions which take in heat?
An endothermal (or endothermic) process is the name of the process in which heat is taken in. In an exothermal (or exothermic) process, heat is released.
Observations of macaques or snow monkeys by Japanese scientists in the 1950s added to evidence that?
controlled nuclear reactions of helium
What are two types of qualitative observations in chemistry?
Two types of qualitative observations in chemistry are color changes and precipitate formation. These observations do not involve numerical measurements but rely on characteristics such as color or appearance. They are useful in indicating chemical reactions or changes in a substance.
What observations give evidence that a chemical reactions has happened?
is the colour change, tempeture change ,gas produced the most common ones
What are some examples of an experiment?
Experiment can be scientific or psychological. They can use samples and observations to gain insight or mix chemicals together to demonstrate reactions.
What do you use to help you make observations during a scientific experiment?
Use a pen and paper, observe the reactions in the experiement and record it in minor ditails.
How long do gel packs stay cold?
There's an ampule inside them. Bend until you can hear the ampule break, then shake them to start the chemical indothermic reaction.
How are chemical reactions described?
Chemical reactions are described based on observations. It may be in terms of changes in color, state of matter, or density.
Why are TSI test observations made 18 to 24 hours after incubation?
TSI (triple sugar iron) test observations are made 18 to 24 hours after incubation because this time frame allows for the characteristic reactions to occur. The test is designed to differentiate between bacteria that can ferment glucose, lactose, and/or sucrose and produce acid and gas. Observing the reactions within this time frame ensures accurate interpretation of the test results.
What is the difference between quantitive and qualitive observations?
Quantitative observations are observations that can be precisely measured. Qualitative observations, meanwhile, are subjective observations that are based on the characteristics of what is being observed.
What is the definition for Quantitative Observation?
Quantitative observations are observations with numbers
