Which change is chemical?
water evaporating
water boiling
water undergoing electrolysis
water freezing
9 answers
water undergoing electrolysis
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
the number of water molecules
the number of glucose molecules
the number of carbon atoms
the number of carbon dioxide molecules
the number of carbon atoms
In a chemical reaction, which aspect of the reactants changes?
total mass
arrangement of the atoms
name of each element
nuclei
total mass
arrangement of the atoms
name of each element
nuclei
arrangement of the atoms
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.
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.
the mass of the mouse plus the mass of the waste produced by the snake.
Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy. What is the coefficient for water after cellular respiration?
The balanced equation for cellular respiration is:
C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy
Therefore, the coefficient for water after cellular respiration is 6.
C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy
Therefore, the coefficient for water after cellular respiration is 6.