Answer:
When scientists have a question, they form a hypothesis, <em>which</em><em> </em><em>is</em><em> </em><em>an</em><em> </em><em>idea</em><em> </em><em>that</em><em> </em><em>may</em><em> </em><em>be</em><em> </em><em>proved</em><em> </em><em>or</em><em> </em><em>disproved</em><em> </em><em>by</em><em> </em><em>an</em><em> </em><em>experiment</em><em>.</em>
15 km 30 divided by 4 is 7.5 km in 30 min times that by 2 the answer is 15
Answer:
b
Explanation:
it melts yes but it's still water [same element] so there fore it's a physical change
Answer:
it can cause internal bleeding
It is anatomically impossible to kill someone by breaking the nose and driving the bone end up into the brain.
Explanation:
According to the law of conservation of mass, the masses at the start and finish of a reaction will stay the same. The law of conservation of mass "mass is always constant in a chemical reaction".
- The law is the basis for chemical calculations.
- Masses of reactants and products must be the same to show that mass is always conserved.
- Disparity in the mass could result from loss of mass to the environment or some side reactions that cannot be easily monitored.
Learn more:
Law of conservation of mass brainly.com/question/5896850
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