True or false a substance that undergoes a physical change is a different substance with different properties after the change.

Match each type of organic compound to its description. Match Term Definition Alcohol A) Made up of aldehydes or ketones bonded together Amine B) Contains a nitrogen bonded to carbon (s) and is usually basia Carbohydrate C) Contains a carbon atom

Caitlin told Teddy that she heard that the largest diamond was found yesterday in Africa. What would be the best source of research for Teddy to confirm Caitlin's claim?

What volume of 18.0 m sulfuric acid is required to prepare 16.5 l of 0.126 m h2so4?

The amount of attraction between two masses depends on:

Magnetite and hematite are both ores for which element?

Energy is required to produce a chemical change during (1) chromatography (2) electrolysis (3) boiling (4) melting

What is the definition of colorie

How does a solid differ from a liquid? b. how does a liquid differ from a gas? c. how is a liquid similar to a gas? d. what is a plasma?

Which pair of elements will form an ionic bond? N and O K and Br C and Cl Fe and Ni

What does mass is conserved in a chemical reaction mean