What scientists do that is the basis of their investigations

What is how fast an object is moving

For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?

An atom of calcium is represented by 4220ca. how many neutrons are in the nucleus of this atom? express your answer as an integer.

An element in group 7 on the periodic table most likely has which physical property?

Why there are only seven crystal systems? why not other number

All heat engines involve combustion. True False

What is the mass of 2.2 moles of aluminum oxide (Al2O3) ?

Which are components of cell theory? Check all that apply. All living things are made of cells. Cells are the basic unit of structure and function of all living things. All cells come from other cells. All cells come from nonliving matter.

Suppose you wanted to heat a mug of water (178 mL) from room temperature 10 °C to 52 °C to make a cup of tea. How much energy (in units of joules) would you need from your microwave? (Cwater=4.184 J/g˚C)

How do you describe an Ionic Bond?