A piece of sodium metal can be described as

a pure substance and a compound.

an impure substance that is reactive.

an impure substance that is unreactive.

a pure substance and an element.

Which of the following is a chemical property of the iron nail? A. The iron nail melts at 1,538°C. B. The iron nail bends when heated to a high temperature. C. The iron nail rusts when it comes into contact with oxygen and water. D.

How many milliliters are in a 3.5 kL

A sample of 0.500 moles of gas is placed in a container of volume of 2.50L. What is the pressure of the gas in ATM if the gas is at 25 degrees celcius

What is the 3 types of matters

What is the final step in the fourth stage of technological design, after a product has been improved and approved? reporting the results finding ways to lower costs selling a prototype determining criteria

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Examples of chemical and physical changes

Is when hot parts of the earth rise as cooler parts sink due to differences in density.