What did chemists find out about the properties of elements?

What is a binary compound?

Describe the characteristics that allow you to determine whether a mixture is homogeneous. state one mixture from the experiment that is homogeneous, (not necessarily the final mixture with all the ingredients; it could be one of the phase mixtures)

Citric acid, the compound responsible for the sour taste of lemons, has an elemental composition of 37.51% C, 4.20% H, and 58.29% O Calculate the empirical formula of citric acid.

A spoon put into a cup of hot tea will get warmer because

Answer to page 22 of the investigating Chemistry, Introductory Chemistry from a Forensic Science Perspective.

Which net change occurs in a nuclear fusion reaction? (1) Ionic bonds are broken. (2) Ionic bonds are formed. (3) Energy is converted to mass. (4) Mass is converted to energy.

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine? a. measure the mass of the gas b. measure the speed of the gas molecules c.

In a pan of boiling water, the water moves in a circular motion.

In the following reaction, which component acts as an oxidizing agent? 10 I - (aq) + 2 MnO4 - (aq) + 16 H + (aq) → 5 I2 (s) + 2 Mn2 + (aq) + 8 H2O (l)

Classify each of the following as a suspension, solution, or colloid. - suspension - solution - colloid A. gasoline B. blood C. mud