Question
Question 1
Question 2
A) Which change is chemical? (1 point)
water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
water freezing: liquid water becoming solid water
water boiling: solid water becoming gaseous water
water evaporating: liquid water becoming gaseous water
A) Which number remains unchanged during photosynthesis? (1 point)
the number of water molecules
the number of carbon dioxide molecules
the number of glucose molecules
the number of carbon atoms
Question 3
Question 4
A) In a chemical reaction, which aspect of the reactants changes? (1 point)
arrangement of the atoms
name of each element
nuclei
total mass
A) A young snake eats and digests a mouse. The increase in the snake’s mass equals (1 point)
the mass of the mouse plus the original mass of the snake.
only the mass of the mouse
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.
Question 5
A)
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)
2
8
6
4
Question 2
A) Which change is chemical? (1 point)
water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
water freezing: liquid water becoming solid water
water boiling: solid water becoming gaseous water
water evaporating: liquid water becoming gaseous water
A) Which number remains unchanged during photosynthesis? (1 point)
the number of water molecules
the number of carbon dioxide molecules
the number of glucose molecules
the number of carbon atoms
Question 3
Question 4
A) In a chemical reaction, which aspect of the reactants changes? (1 point)
arrangement of the atoms
name of each element
nuclei
total mass
A) A young snake eats and digests a mouse. The increase in the snake’s mass equals (1 point)
the mass of the mouse plus the original mass of the snake.
only the mass of the mouse
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.
Question 5
A)
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)
2
8
6
4
Answers
GPT-4o mini
Here are the answers to your questions:
**Question 1**
A) Which change is chemical?
**Answer: water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules**
This is a chemical change because the water is broken down into different substances (oxygen and hydrogen).
---
**Question 2**
A) Which number remains unchanged during photosynthesis?
**Answer: the number of carbon atoms**
In photosynthesis, the number of carbon atoms in the reactants (carbon dioxide) is equal to the number in the products (glucose).
---
**Question 3**
A) In a chemical reaction, which aspect of the reactants changes?
**Answer: arrangement of the atoms**
The arrangement of the atoms changes as bonds are broken and formed during a chemical reaction.
---
**Question 4**
A) 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.**
The snake's mass increases by the mass of the mouse it digests, minus any waste produced.
---
**Question 5**
A) Based on the law of conservation of matter, what is the missing coefficient for water?
**Answer: 6**
The balanced equation for cellular respiration is:
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy.
This indicates that 6 molecules of water are produced.
---
If you have more questions or need further clarification, feel free to ask!
**Question 1**
A) Which change is chemical?
**Answer: water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules**
This is a chemical change because the water is broken down into different substances (oxygen and hydrogen).
---
**Question 2**
A) Which number remains unchanged during photosynthesis?
**Answer: the number of carbon atoms**
In photosynthesis, the number of carbon atoms in the reactants (carbon dioxide) is equal to the number in the products (glucose).
---
**Question 3**
A) In a chemical reaction, which aspect of the reactants changes?
**Answer: arrangement of the atoms**
The arrangement of the atoms changes as bonds are broken and formed during a chemical reaction.
---
**Question 4**
A) 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.**
The snake's mass increases by the mass of the mouse it digests, minus any waste produced.
---
**Question 5**
A) Based on the law of conservation of matter, what is the missing coefficient for water?
**Answer: 6**
The balanced equation for cellular respiration is:
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy.
This indicates that 6 molecules of water are produced.
---
If you have more questions or need further clarification, feel free to ask!