Which of the following represents a physical change?

A: Phase changing, B: Atoms rearranging, C: Bonds breaking, D: Bonds forming

The formation of which product (s) will most likely be observed in a combustion reaction?

What must happen for heat to be transferred by convection? A. The liquid or gas must circulate to move the heat. ОО B. The kinetic energy must be equal in two objects. O C. The sun must send out electromagnetic waves. O D.

The surface of water can act like a sort of skin due to a property of liquids called

Which is the best tool to find the volume of the base that she needs to neutralize the acid

How much of a 100.0 g sample of 198au is left after 8.10 days ifi its half life is 2.70 days?

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps