The periods inside the Periodic Table is B. a horizontal row, and is numbered 1 through 7
hope this helps
Answer:
Sublimation
Explanation:
Sublimation is when a substance goes from a solid to a gas, without going through a liquid phase. This is not a method for separation and purification.
Answer:
A substance which burns in air and tends to produce heat and light is known as Combustible substances. Non-combustible substances are certain substances which are not combustible in the presence of air. Will not burn on being exposed to flame.
Answer:
A and B
Explanation:
A: The discovery of x- rays is a scientific discovery that led to X-ray machines which is technology.
B: Finding out that massive amounts of energy can be released by splitting the nucleus of an atom was the discovery and it led to nuclear power plants.
Satellites helping scientists map the earth doesn't really have an example of science. It just says that Satellites help scientists, and satellites are technology.
Robotic machines are also technology. Robots assisting doctors in surgery is technology helping people not science influencing technology.
So A and B would be the answers.
Hope this helps :)
Answer:
i think the answer is lettee e- Na.
