You measure the ambient temperature before the experiment in case the experiment is sensitive to ambient temperature. You want to record all of the environmental factors that might affect the experiment before starting it. You measure the ambient temperature after the experiment for the same reason, and also in case the experiment affected the ambient temperature. Depending on the experiment, environmental factors may need to be considered when analyzing the results.
so you can know more about the topic before you start
A manipulated variable. (Apex)
If you do not read all the instructions before doing a experiment, something bad could happen. If you are dealling with chemicals in a science experiment, something could explode, turn into a terrible gas. Also, instructions will tell you is you should or should not breath in right near a substance, or touch one.
You should have everything set out correctly.Which means you should have the notebook your going to make observations with and have your safety tools.
It is an educated guess before starting an experiment.
Yes, you should always be sterile before performing any experiment as to not add any variables.
It depends on what your experiment was. You should ask a teacher or someone that you know who has done this before.
You measure the ambient temperature before the experiment in case the experiment is sensitive to ambient temperature. You want to record all of the environmental factors that might affect the experiment before starting it. You measure the ambient temperature after the experiment for the same reason, and also in case the experiment affected the ambient temperature. Depending on the experiment, environmental factors may need to be considered when analyzing the results.
Now what you are doing and be organized
Before starting an experiment with a flammable liquid, you should ensure you have a fire extinguisher nearby, work in a well-ventilated area, avoid any open flames or sources of ignition, and wear appropriate personal protective equipment such as safety goggles and gloves.
The answer you predict before starting the experiment is your hypothesis.
so you can know more about the topic before you start
A manipulated variable. (Apex)
If you do not read all the instructions before doing a experiment, something bad could happen. If you are dealling with chemicals in a science experiment, something could explode, turn into a terrible gas. Also, instructions will tell you is you should or should not breath in right near a substance, or touch one.
it would would mess up the experiment
You should have everything set out correctly.Which means you should have the notebook your going to make observations with and have your safety tools.