What kind of investigative never includes a hypothesis

What is a shortened definition for chemistry?

What two properties most affect the strength of the gravitational forces

Which of these statements are consistent with kinetic-molecular theory? Select all that apply. a. The molecules in water at 100°C have more kinetic energy than the molecules in water at 0°C. b.

Which of the following tend to react by losing 2 electrons? A. Noble gases B. Halogens C. Alkali metals D. Alkali earth metals

Which is a metal alloy? A iron, used for making nails, free weights, and ornamental garden fencing B silver nitrate, a chemical compound used to develop photographic film C neodymium, an element in the lanthanide series used for making headphones D

The ideal gas law shows us how a gas will behave under many conditions. The formula is: P V = n R T Where P = pressure, V = volume, n = amount of the substance, R = ideal gas constant, and T = temperature.

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin

Peas contain 250 kJ per 100 g. You would use the equivalent of 600 g of peas if you slept for.

A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L. If the temperature changes to 70 ∘C, and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?

Which is a waste product of aerobic respiration? A. water B. energy C. oxygen D. glucose