According to ionization, which pair is least likely?

What does the variable A stand for in the Arrhenius equation? A. activation energy B. frequency factor C. rate constant D. reactant concentration

A group of students are planning to observe and describe microhabitats around the schoolyard. which list of tools is the best to take along?

The amount of moisture in the air is called

How many mol of nitrogen is in 0.30 mol of caffeine

Which of these is NOT an example of physical change? A. a change of state B. a change of size C. a change of mass D. a change of appearance

Write a sentence using the term atomic theory

Which of the following groups contains mostly radioactive elements? Question 5 options: nonmetals alkaline earth metals halogens inner transition metals

Who further developed Democritus's early contributions to the atomic theory by proposing that each chemical element has its own kind of atom?

Which is the best metal to use in an alloy to increase its electrical conductivity? A) Al B) Cu C) Fe D) Sb

Which of the following is chemically inert (unreactive) ? Select one: (A) carbon (atomic number 6) (B) sodium (atomic number 11) (C) neon (atomic number 10) (D) oxygen (atomic number 8)