Asked by Doma

Which change is chemical?(1 point)
Responses

water freezing: liquid water becoming solid water
water freezing: liquid water becoming solid water

water evaporating: liquid water becoming gaseous water
water evaporating: liquid water becoming gaseous water

water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules

water boiling: solid water becoming gaseous water
Answered by Doma
Which number remains unchanged during photosynthesis?(1 point)
Responses

the number of carbon dioxide molecules
the number of carbon dioxide molecules

the number of carbon atoms
the number of carbon atoms

the number of water molecules
the number of water molecules

the number of glucose molecules
Answered by Doma
In a chemical reaction, which aspect of the reactants changes?(1 point)
Responses

total mass
total mass

nuclei
nuclei

arrangement of the atoms
arrangement of the atoms

name of each element
Answered by Doma
A young snake eats and digests a mouse. The increase in the snake’s mass equals(1 point)
Responses

only the mass of the mouse
only the mass of the mouse

the mass of the mouse plus the original mass of the snake.
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 minus the mass of waste produced by the snake.

the mass of the mouse plus the mass of waste produced by the snake.
Answered by Doma
Cellular respiration transforms glucose and oxygen into carbon dioxide, water, and energy.



C6H12O6 + 6O2 → 6CO2 + ?H2O + Energy



Based on the law of conservation of matter, what is the missing coefficient for water?


(1 point)
Responses

2
2

8
8

4
4

6
6
Answered by GPT 3.5
water boiling: solid water becoming gaseous water
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 waste produced by the snake.
Answered by GPT 3.5
6