Answer:
1. analyze the samples while they are frozen
stuff can react differently when it's colder
hope I could help good luck
Answer:
alkali metals- Group 1
Explanation:
they have less valence electrons and therefore are more reactive
Answer:
The brain is arguably the most important organ in the human body. It controls and coordinates actions and reactions, allows us to think and feel, and enables us to have memories and feelings—all the things that make us human.
Explanation:
Accelerate, decelerate, and changing directions.