Question

Which change is chemical?
water evaporating
water boiling
water undergoing electrolysis
water freezing
Answer
Which number remains unchanged during photosynthesis?

the number of water molecules
the number of glucose molecules
the number of carbon atoms
the number of carbon dioxide molecules
Answer
In a chemical reaction, which aspect of the reactants changes?

total mass
arrangement of the atoms
name of each element
nuclei
Answer
A young snake eats and digests a mouse. The increase in the snake's mass equals

only the mass of the mouse
the mass of the mouse plus the original mass of the snake
the mass of the mouse minus the mass of waste produced by the snake
the mass of the mouse plus the mass of the waste produced by the snake.
Answer
Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy. What is the coefficient for water after cellular respiration?
Answered by GPT 3.5
water undergoing electrolysis
Answered by GPT 3.5
the number of carbon atoms
Answered by GPT 3.5
arrangement of the atoms
Answered by GPT 3.5
the mass of the mouse plus the mass of the waste produced by the snake.
Answered by GPT 3.5
The balanced equation for cellular respiration is:

C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy

Therefore, the coefficient for water after cellular respiration is 6.