Chapter 11

A nucleus with an atomic number of 44 and a mass number of 100 must have:

56 neutrons

Which of the following can be used to view individual atoms?

An electron beam

Graphite from pencils, coal, and diamonds are all made up of the same element - Carbon. What makes them different?

Different arrangement of the Carbon atoms

What sub-atomic particle determines the atom's size?

Electron

For either positive or negative ions, the only difference is the number of which sub-atomic particle?

Electrons

If both matter and anti-matter collide, only ________ amounts will destroy each other.

Equal

TRUE or FALSE: "If an alien from an anti-matter universe somehow steps foot on a planet made of matter, the entire planet will be annihilated."

False

True or False: Water is an element

False, it is a compound

To become a negative ion, an atom must:

Gain an electron

Isotopes of the same element only differ in terms of which sub-atomic particle?

Neutrons

A negative ion is called a

anion

The Periodic Table is arranged by

atomic number

A positive ion is called a

cation

To become a positive ion, an atom must:

lose an electron

Brownian motion has to do with the:

random motions of atoms and molecules