B AN UNNATURAL PHENOMENON CAUSED BY HUMANS THAT MAINTAIN EARTHS TEMP RANGE
Its Not B its either c or d
b.first hypothesis was changed
c.results are repeatable
d.latest equipment was used
Answer:
Consumers can buy farm-bred fish instead of wild fish.
Explanation:
B on edge 2020. I got it right
are primarily sugars and starches
are the most readily available source of energy for organisms
are the largest of the four main biological macromolecules
Answer:
are the most readily available source of energy for organisms is the correct answer.
Explanation:
B. finding a comet
C. examining the structure of plant cells
D. building a garage
2. Which of the following procedures involves a physical change in one of the substances?
A. creating salt by reacting sodium metal and chlorine gas
B. allowing a nail to rust
C. building a model rocket propelled by mixing baking soda and vinegar
D. grinding chalk into a fine powde 3. You have three molecules of glucose (3C6H12O6). How many oxygen atoms do you have?
A. 1
B. 3
C. 6
D. 18
Question 1:
The right answer is A
Chemistry is a science of experimental nature that studies the composition of matter and its transformations.
Chemistry is thus interested in the elements that constitute matter (atoms, ions, etc.), in their properties and in the chemical bonds that can be created between them.
Question 2:
The right answer is A
Sodium chloride is an ionic chemical compound of the formula NaCl. It is more commonly called table salt or cooking salt, or simply salt in everyday language.
It is clear that it exists in the form of solid salts.
during his training, there was a physical change of sodium (metal) and chlorine (gas) into a salt.
Question 3:
This question is a little bit tricky
If we assume that the question is aimed at finding the total number of oxygen in all three molecules together, the answer is 18.
A glucose molecule is made up of 6 atoms of oxygens if we have three glucose molecules (assuming that they are bound), we multiply by 3 and this gives us 18 oxygen atoms.