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Explain to me what lab safety is.
Lab safety is being responsible in a lab and following the rules to keep yourself and others safe. For example, you wear goggles so no chemicals get in your eyes and wear gloves so no chemicals get on your hands.
Explain to me what the atomic mass and the atomic Number tells us.
The atomic number tells us how many proton's an atom has. The atomic mass tells us the total number of protons and neutrons combined.
what is an ecosystem?
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms. Abiotic factors include rocks, temperature, and humidity.
How do phones work?
The sound waves are carried to a thin metal disk inside the phone, called a diaphragm, and are converted into electrical energy. The electrical energy travels over wires to another phone and is converted from electrical energy to sound waves again which can be heard by someone on the other end of the phone.

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