Chapter 2 Study Guide - The chemistry of life

Front

What is the charge of a proton?

Back

Positively charged.

Front

What is the charge of an electron?

Back

Negatively charged.

Front

What is the charge of a neutron?

Back

No charge.

Front

What is a covalent bond?

Back

A bond formed by the sharing of electrons.

Front

What is the atomic number of Silicon?

Back

14 (number of protons).

Front

In a neutral atom, how do the number of protons compare to electrons?

Back

They are equal.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

True or False: In an element, protons = neutrons = electrons.

Back

True.

Front

True or False: In an isotope, protons = neutrons.

Back

False.

Front

What is the main difference between ionic and covalent bonds?

Back

Ionic bonds involve transfer of electrons, while covalent bonds involve sharing of electrons.