Blog

Iron-56 contains ________ neutrons.

A dictionary has the following definition for a word: “A tentative explanation that accounts for a set of facts.” Which of the following words best fits that definition?

A scientific law is a brief statement that summarizes past observations and predicts future ones.

How much heat (kJ) is needed to raise the temperature of 100.0 grams of water from 25.0°C to ? Water has a specific heat capacity of 4.186 J/g°C

Which multiplier does the abbreviation m represent?

The mass of a proton is 1.67 × 10-27 kg. What is the mass of a proton in nanograms?

The atom is the fundamental building block of everything we hear, feel, see, and experience.

The mass of a single arsenic atom is 1.244 × 10-22 g. This is the same mass as

Ernest Rutherford proved the existence of electrons.

When an atom gains an electron, the resulting particle is called