To test for hydrogen, burn a candle near the suspected source of hydrogen. If you hear a squeaky pop sound, hydrogen is present because when hydrogen gas burns, it makes a squeaky pop sound.
First Magnetic Separation to remove the iron fillings.
Next Dissolution of the sand and salt in water, and Filtration to separate the salt solution from the sand.
Evaporation of the salt solution to get back the salt.
Answer:
atoms are neutral or they have equal number of proton and electron but ions can be cation(positively charged) or anion(negatively charged) based on the number of electron the atm lose and gain respectively
<span>The burning of fuel occurs inside the cylinder with the piston in an internal combustion engine. So your answer should be number 3. Keystone right? Just took the test in physical science and got this answer right.</span>
