Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop- down menus to complete the statements.
The independent variables in Part I, the ones intentionally manipulated, are the
The independent variable in Part II, the one that is intentionally manipulated, is the
The dependent variable for both Parts I and II, the one that you measure the response in, is the

1. Mass and type of solution

2. Type of material

3. Temperature

1 the physical properties is correct                    2.the pH of the solution

Explanation:

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.