Answer:
Demonstration 1 showed a chemical change because a new gaseous substance was formed, and demonstration 2 showed a physical change because liquid water became water vapor.
Explanation:
Chemical changes alter the chemical makeup of a subject, and a physical change only alters the appearance of a subject, not the chemical makeup.
Http://www.lcmrschooldistrict.com/demers/cbphysicalscience/Chp%208-3%20Solubility%20and%20Concentrat...
This website helped me understand the concept.
An isotope is when there is same amount of atomic number but different mass number. It also mean that only the number of neutrons changes if there is an isotope present.
Answer:
Second one
Explanation:
I think it's the second cause there's no energy w/o heat. So it's the second.
Use the drop-down menus to select the correct answer for each statement. the correct answers are......
Current is the independent variable.
Voltage is the dependent variable.
This graph shows a(an) direct relationship.
A current of 0.04 A gives a voltage of 5.5 V.
A voltage of 2 V corresponds to a current of 0.014 A.
