4. Methods scientists use to determine if a change was physical or chemical

Match these items. 1. H-CC-H (name) 2. cyclic compound with both saturated and unsaturated characteristics 3. CnH2n 4. reaction typical of unsaturated hydrocarbons 5. CnH2n-2 6. series name of hydrocarbons with triple bond 7. CnH2n+2 a. addition b.

A small diamond, which is made of pure carbon, contains too many carbon atoms to count individually. Which is closest to the number of carbon atoms in a 1.0-g diamond? Disabled A. 3.6 x 10-45 carbon atoms Student Selected Incorrect B. 9.

Butter melts when you heat it in a pan or on the stove is this a chemical change or a physical change? how can you tell?

Which is the most reducing agent in the periodic table? ... ?

What is mandrake tuber

What volume will 0.710 moles of nitrogen gas occupy at STP?

4) Acompound has an empirical formula of Na2co3, and a molar mass of 3.18g/mol. Find its molecular formula.

How many molecules of glucose, C6H12O6, can be "burned" biologically when 283.2 grams of oxygen is a available?

Why does acids that has been accidentally spilled on a book cause the colour of the book cover and the ink to change?

How many moles of H2O will be required to make 19.2 moles of O2