Use the law of conservation of the mass to explain how you know that the atoms make up all matter in the universe today are the same atoms that have existed since the universe began.

What does the atomic number of an element specify? what does the atomic number of an element specify?

What are the rules of counting significant numbers?

Which type of hybridization leads to a trigonal planar electron domain geometry? s sp sp2 sp3

Which phrase best describes the main reason that scientists reproduce the results of other scientists?

What would happen to a plant that could not obtain carbon dioxide? A. it would not be able to reproduce B. it would not be able to eliminate waste products C. it would not be able to absorb minerals D. it would not be able to make food

What is the difference between the electronegativity values of sodium and bromine?

Which of the following elements is the most stable element? argon, manganese, phosphorus, robidium

List results of Chemical Reactions.

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water