Answer & Explanation:
Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.
i look it up ok
Training too many times a week and not letting your body rest.
D: heart rate
PCRABS is a good acronym to remember the skill related fitness components
Power. Co ordination. Reaction time. Agility. Balence. Speed