Answer:
it sank to the bottom and started dissolving and creating a gas (gas production is a sign that a chemical change is happening)!
Explanation:
As the gas bubbles rose, they carried some of the colored water with them. When the blob of water reached the top, the gas escaped and down went the water.
Thomas discovered cathode rays when he was working with electrons. He was performing experiments with electrons when one of them became electrically charged and a beam of light came from it, this creating a cathode ray.
Define the problem
Explanation:
The first step in a scientific investigation is to define the problem at hand. Definition of a scientific problem makes a scientific investigations possible.
- When preliminary observations are made about a phenomenon. A lot of questions as to why such things occur will arise.
- From the question, we can state the problem and the likely causes.
- The first portal in an inquiry is problem definition.
- This would them lead to the formulation of a hypothesis which contains problem statement and likely causes.
- The hypothesis leads to the design of an experiment from which investigations using experiments can be done.
- The data from the experiments are collected and analyzed.
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<span>D. 0.000391 is your answer because the decimal place moves 4 places to the left</span>
During a chemical reaction, the mass of the products is always equal to the mass of the reactants.