Answer:
True
Explanation:
The majority of the reactions happened with a flow of heat. When there's no heat, the reaction is adiabatic.
For no adiabatic reactions, the heat can be released (evolution) by the system, so the reaction will be exothermic, or absorbed by the system (absorption), then the reaction is called endothermic.
Because the thermal energy<span> dissipates too quickly and is </span>not<span> concentrated enough! :)</span>
Answer: 
Explanation:
Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.
When dilute hydrochloric acid and calcium carbonate react then it gives calcium chloride and water and carbon dioxide as products.
The complete balanced equation will be:

The ionic equation will be:

A. To explain what causes natural events to happen
Explanation:
The primary goal of science is to explain what causes natural events to happen.
Science is an inquiry into nature that uses a systematic approach.
- The ultimate aim of science is to understand the world around us to better appreciate it.
- This has led to daring observations being made through time and investigations initiated to understand some phenomenons.
- The study of science follows a systematic pattern.
- It usually starts with an observation which leads to inquiries and formulation of hypothesis .
- The hypothesis is tested.
- At each stage more knowledge is gathered about an observation.
learn more:
Experiment brainly.com/question/5096428
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Answer:
The lines fall somewhere in one or more of the colors in the spectroscope. When electrons in an atom are excited by shooting electricity through them for instance, some electrons are forced to temporatily jump to a higher energy level. As it is only temporary, the electron soon falls back down to its own level. However as it loses potential energy it gives off a brief burst of light energy which we can see. If the light is red then the electron didn't jump very high, and therefore lost only a little eneergy falling back down. If the light is violet or purple it fell from a high orbital and released a lot of energy falling back down. Everything else falls in between.
Explanation: