True or false: Without taking a measurement, I can say that I have controlled a variable.

(Example: I say I have controlled temperature, but I am not continuously monitoring temperature with a thermometer

What force caused the movement of the continents from one supercontinent to their present positions

The table shows the total number of electrons in Atom A and Atom B. Atom Number of Electrons A 11 B 17 Which statement is correct? A will give up electrons to form bonds. B will give up electrons to form bonds.

Which statement best describes London dispersion forces? A. repulsive intramolecular forces B. attractive intramolecular forces C. repulsive intermolecular forces D. attractive intermolecular forces

It is winter where jenna lives. Its been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes?

If 2.50 grams of ethane is allowed to react with 5.00 grams of oxygen how many grams of water would be expected?

You normally take 2 Ibuprofen (C13H18O2) when you have pain. Each one is 250 g. How many moles of ibuprofen do you take?

Atoms in a covalent bond are held together by what?

Draw the sulfur-containing product of the following oxidation reaction between two 2-methyl-1-propanethiol molecules. Draw all hydrogen atoms.

Describe the Earth's layers in relation to density

The first planet to be discovered using mathematical prediction was