i think the answer is A. Physical and chemical changes
the answer is <em>a} physical and chemical changes</em>
Answer:
Evaluate the result (Apex)
Explanation:
Density is the correct answer choice.
Answer: 1- Alkali metals
2- Noble gases
3- Halogens
Average of the trial is: 288.50 C
Percent Error: 3.83%
(291 + 287 + 295 + 281) : 4 = 288.50 C
Average: 288.50 C
Percent Error: {(300 - 288.50) : 300} x 100% = 3.83 %
