Answer:
Let's see one by one :
- Change of color - Yes, it's a chemical change.
- Smell is produced - Chemical change occured.
- Heat is produced - Of course, Exothermic reaction.
- Light is produced - nah! Here's the mistake, it's not showing anything chemically occurring.
- Gas and solid produced - Shows Chemical reaction.
<h3>So, your answer would be <em>Light is produced. </em></h3>
Correct answer: D. all of the above
Answer:
A) A tentative statement used to guide a scientific investigation is called scientific hypothesis.
As hypothesis is a proposed details of a phenomena, it can guide us in one way or another to carry out the scientific investigation.
B) Makes prediction about future events is scientific hypothesis.
Scientific hypothesis bases on the observation made predicts about future events, which could be either true or false.
C) Can be tested many independent researches is a scientific theory.
A scientific theory is developed when it has been passed through many researches and had gained acceptance too.
D) Both Scientific theory and hypothesis are based on the observations of the natural phenomena.
Firstly, an observation is made based on natural phenomena, which leads to questions, then research or study is carried out to answer these questions leading to the formation of a hypothesis which upon successful testing forms a theory.
E) Scientific theory is a well-established highly reliable explanation.
It a highly sustained explanation based on facts of nature, that are confirmed via a lot of experiments.
