Answer:
put a test tube over the opening, remove it and quickly put a lit splint near the mout or in the tube. if you hear a squeaky pop it is hydrogen.
Explanation:
hydrogen ignites in air.
Science is a continuous profession of study because new ideas are produced based on new evidence. Also, there are different topics of science such as climate change or new cures to different diseases.
it can influence the temperature which affects the climate and climate affects weather
Answer:
The number of electrons in the outer energy level
Explanation:
Answer:
Explanation:
physical properties include:
colour
shape
size
taste
etc............
