What is a subcategory of a period?

A. Era

B. Jurassic

C. Eon

D. Epoch

SC: Chris. Watts2000

Which of the following statements is correct? A. Red litmus paper turns blue when placed in a base. B. Red litmus paper stays red when placed in a base. C. Blue litmus paper stays blue when placed in an acid. D.

When two aqueous solutions are combined the reaction forms a solid that settles out of solution. What is this solid called? A. substrate B. sublimate C. precipitate D. electrolyte

Which of the following motions is least like an earthquake wave?

Which statement best describes how to predict the formula of a stable inonic compound

Identify the following as a cation or an anion, and determine the charge on each: A lithium ion with 3 protons and 2 electrons.

When carbon undergoes sp2 hybridization it forms

Give the formula for molarity

A 54-gram sample of an unknown material has a volume equal to 20 cm3. Based on its density, could the sample be aluminum? Explain

What type of reaction takes place when atoms or molecules rearrange to form new substances?

If you pump air into cycle tyre a slight warming effect is noticed at valve stem why