Define element and compound. explain the difference between an element and a compound.

Which of the following do all of the small objects in the four categories (dwarf planets, comets, asteroids, and meteoroids) have in common?

If you remove all the particles from a wooden table, what remains

Suppose that a 0.2 g/mL solution of (S) - ibuprofen in a 2 dm long cell rotates plane-polarized light + 10°. What is the specific rotation for (S) - ibuprofen?

The structure of benzene can best be described as a

Of a non-volatile solute is dissolved in 365.0 g of water. the solute does not react with water nor dissociate in solution. assume that the resulting solution displays ideal raoult's law behaviour. at 70°c the vapour pressure of the solution is 231.

Which set of procedures and observations indicates a chemical change? A) Ethanol is added to an empty beaker and the ethanol eventually disappears. B) A solid is gently heated in a crucible and the solid slowly turns to liquid.

If 100 grams citric acid react with 100 g baking soda how many grams of carbon dioxide?

What state of matter undergoes changes in volume most easily? a. solidb. liquidc. gasd. frozen

What was the result of the atomic theory?

Explain mitosis and meiosis in your own words.