Answer: false
Explanation: Reason being A substance cannot be a gas or a mixture, only can a pure substance that occurs in nature may
Answer:
to make a discovery, test a hypothesis, or demonstrate a known fact.
Explanation:
perform a scientific procedure, especially in a laboratory, to determine something.
1. gamma rays
2. C
3.D
4.A
5.A
6.A
7.B
8.some aplications would be the use of x-rays in medicine and the rsiation of food to preserve it
9.Both fission and fusion are nuclear processes by which atoms are altered to create energy, but what is the difference between the two? Simply put, fission is the division of one atom into two, and fusion is the combination of two lighter atoms into a larger one
10.The electroscope is a fairly simple device comprised of a metal rod with two thin leaves attached to one end. If the electroscope is given a negative charge, the metal leaves will separate from each other. It is this characteristic that makes the electroscope useful as a detection device. A negatively charged electroscope will discharge when ions in the air remove electrons from it, and consequently, a positively charged electroscope will discharge when it takes electrons from the air around it. The rate of discharge of the electroscope is a measure of ions in the air and can be used as a basis of measurement and detection
11. they are bigger and colide with atoms easier
Answer:
Two object must have different temperatures
Explanation:
Heat Transfer can occur in 3 ways: Conduction, Convection, and Radiation
