Answer:
During phase change (e.g. gas to liquid/liquid to solid vice versa), there is no temperature change observed. Thermal energy is not used to increase the kinetic energy of the particles, but to break the intermolecular forces. Thus, the temperature remains constant as all the thermal energy is used up and none of it is absorbed or released.
According to the research, scientific observations are important because every experiment begins with observations.
<h3>What are observations?</h3>
It consists of receiving knowledge of the outside world through our senses, it means that we naturally make observations about the world around us and the first step proposed by the scientific method.
Scientific observation, on the other hand, refers to the process of detailing any phenomenon of nature with analytical intent, usually later replicated in a laboratory (experimentation) or controlled environment.
Similarly, there are qualitative observations that are based on the senses, which are generally more subjective, while quantitative observations are more objective, focusing mainly on numbers, for example "the flower has five petals" is a quantitative observation.
Therefore, we can conclude that according to the context, scientific observations are important because every experiment begins with observations.
Learn more about scientific observations here: brainly.com/question/24071808
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The atomic number of an atom (Z) is equal to the number of protons.
The mass number of an atom (A) is equal to the number of protons plus the number of neutrons (N), i.e. A = Z + N
Therefore, N = A - Z = 7 - 3 = 4.
So, this neutral lithium atom has 4 neutrons.
Answer: 4.
Answer:
Metallic character refers to the level of reactivity of a metal. Non-metallic character relates to the tendency to accept electrons during chemical reactions. Metallic tendency increases going down a group. Non-metallic tendency increases going from left to right across the periodic table.
Explanation:
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