Lab 3, Chemistry of Life

The number of protons plus the number of neutrons

B. Atomic Weight (mass)

A combination of 2 or more atoms of different elements

E. Compound

A small, negatively charged particle that orbits the nucleus

H. Electron

An atom that has gained or lost electrons, and thus carries an electrical chage

J. Ion

Atoms are held together by sharing electrons

F. Covalent Bond

The most fundamental substances of matter

I. Elements

A substance that combines with hydrogen ions

C. Base

A molecule that influences the rate of chemical reactions but is not consumed in the reaction

D. Catalyst (enzyme)

two atoms with the same atomic number but different atomic weights

K. Isotopes

A substance that releases ions in water

G. Electrolyte

the number of protons in an atom

A. Atomic number

The area of an atom where protons and neutrons are located

L. Nucleus

The atomic number of hydrogen is __, and it has __ electron(s) in its outer shell.

1,1

The atomic number of chlorine is __, and it has __ electron(s) in its outer shell.

17,7

using the style shown in Figure 3.2, draw an atom of hydrogen and chlorine, clearly indicating the numbers and positions of the protons, neutrons, and electrons.

Hydrogen: should be a circle to be the "shell", with an "electron" on that shell (a small circle with and negative sign in it) and on the inside of the shell should be one "proton" and one "neutron" (both small circles one with a circle in it and other wi

Is the hydrogen atom stable? Is the chlorine atom stable?

yes, and yes

What type of bond is likely to form the compound HCl (hydrochloric acid)?

Covalent bond

Repeat your drawings, but also show how and explain how this bond of HCl would form.

the drawing should be like the one above except the one "electron" on the hydrogen is bonded with the Chlorine (they are sharing the electron) which balances the outer shells of both