Chemistry Unit 2, lessons 4-5

Which is true of atoms that have a charge?

• They are called ions

• The number of protons do NOT equal the number of electrons

• The number of protons equal the number of electrons

• The number of electrons is an odd number

A cation is

• A positive ion because it has more protons than electrons

• A positive ion because it has more electrons than protons

• A negative ion because it has more protons than electrons

• A negative ion because it has more electrons than protons

An anion is

• A positive ion because it has more protons than electrons

• A positive ion because it has more electrons than protons

• A negative ion because it has more protons than electrons

• A negative ion because it has more electrons than protons

A neutral atom

• is called an ion

• has en equal number of protons and electrons

• has an unequal number of protons and electrons

• has a charge that equals zero

The atomic number

• equals the number of protons

• can be shared by more than one element

• is also the number of electrons if the atom is neutral

• is always also the number of electrons

• is the number of electrons and neutrons added together

The type of element is determined by the number of ____ in the atom.

Which are true of Coulomb's Law?

• The larger the charges, the stronger the force

• The force of attraction is based on distance

• Distance does not influence the force of attraction

• The smaller the charges, the stronger the force

• Objects with a charge cannot attract a neutral object

How does rubbing a neutral object (such as a balloon on clothes) create a charge?

• It transfers electrons

• It transfers protons and electrons

• It transfers neutrons

• It transfers protons

Which is true of protons?

• If you change the number of protons, you change the element

• They attract electrons

• They are located in the nucleus

• They attract neutrons

• They are positively charged

Which is true of neutrons?

• They have no charge

• They are located in the nucleus

• If you change the number of neutrons you change the element

• If you change the number of neutrons you change the mass

• They attract electrons