What is the term for the outer electron shell of an atom?

a. covalent

b. ionic

c. metallic

d. valence

Karl Landsteiner placed animal blood in human blood and discovered that the blood clumped. Which did his creativity lead to?

Which statement is not true? A) All planetary orbits are elliptical B) Some planets revolve backwards C) All planets revolve are the sun D) All planets spin/rotate on their axis

An open box of bandages is on the floor bandage wrappers are found nearby chemical treatment

The overall reaction of ozone reacting to form oxygen has been proposed to occur in a reaction mechanism of: What is the role of O (g) and what is the overall balanced equation?

Predict the molecular shape of methane. trigonal pyramidal bent linear tetrahedral trigonal planar (120°) Predict the molecular shape of the carbonate ion.

Which gas sample at STP has the same total number of molecules as 2.0 liters of CO2 (g) at STP

Benzene contains only carbon and hydrogen and has a molar mass of 78.1 g/mol. Analysis shows the compound to be 7.44% hydrogen by mass. Find the empirical and molecular Formula of benzene.

What is the Lewis structures for Ca (OH) 2

Compare and contrast homogeneous and heterogeneous mixtures using key terminology, and provide at least three examples of each. For example, explain what the mixture is comprised of and what makes it homogeneous or heterogeneous.

Which element would most likely have chemical properties similar to that of fluorine (F) ?