HELP ASAP
1) which change is chemical?
• water undergoing electrolysis
•water freezing
•water evaporating
•water boiling
2)which number remains unchanged during photosynthesis
• The number of glucose molecules
• The number of carbon atoms
• The number of water molecules
• The number of carbon dioxide molecules
3) in a chemical reaction which aspect of the reactants change
•mass
•atoms
•nuclei
•total mass
4) a young snake eats and digest a mouse the increase in the snakes mass equals
•the mass of the mouse
• The Mas of the mouse plus the mass of waste produced by 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
5) 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?
•4
•8
•2
•6
14 answers
What are your choices?
Evaporated or evaporating water is H2O too.
2D
3C
4D
5C
2B
3A
4D
5D
1 c
2 a
3 a
4c
5 d
~water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
Which number remains unchanged during photosynthesis?
~the number of carbon atoms
In a chemical reaction, which aspect of the reactants changes?
~mass
A young snake eats and digests a mouse. The increase in the snake’s mass equals
~the mass of the mouse minus the mass of waste produced by the snake.
Based on the law of conservation of matter, what is the missing coefficient for water?
~6
1.B
2.C
3.D
4.D
5.C (6)
for connections, the answers above we're wrong about 1-3!
ANSWER - water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
Which number remains unchanged during photosynthesis?
ANSWER - the number of carbon atoms
In a chemical reaction, which aspect of the reactants changes?
ANSWER - arrangement of the atoms
A young snake eats and digests a mouse. The increase in the snake’s mass equals?
ANSWER - the mass of the mouse minus the mass of waste produced by the snake
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?
ANSWER - 6
Hopefully this helps you lovely people, take care now~