What is a substance that cannot be broken down into a simpler substance

How are radioactive isotopes detected?

Rutherford's experiment conflicted with Thomson's model because it showed that A. the atom contains positively and negatively charged particles. B. the atom is composed of mostly empty space. C. the atom is full of a positively charged substance. D.

When a molecule absorbs ir electromagnetic energy, what are the vibrational modes affected? select one or more correct answers.

Which volume is the smallest? A. One milliliter B. One deciliter C. One liter D. One microliter

Describe how the earth surface is heated by the suns radiation

Given the propane molecule C3H8 (g) ! a) What is the balanced equation for the combustion of propane in O2? (20 pts.) b) What is the standard enthalpy change ΔH0 for the reaction at 25°C? (20 pts.

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.

Which has more inertia: a kilogram of cotton balls or a kilogram of gold?

Democritus who lived in greece during the fourth century b. c suggested that matter is made up of tiny particles that cannot be divided. what did he called them

What is the root mean square of carbon iv oxide at 27°C?