please I need help with questions
Stadent An Introduction to the Chemical Basis of Life Thiere ave ninety-two naturally occurring elements in the universe. An element is a substance that canniot he separated into simpler substances by purely chemical means The smallest indivisible unit of an element is the atom is composed of three fundamental particles, protons s and electrons Protons are positively charged particles and along with neutrons, which not have any electrical change and are therefore n neutron cutral. are found in the nucleus of the atom Electrons are negatively charged particles that occupy specific orbits around the nucleus t with cach to form discrete units called molecules The atoms of a molecule can te kind or different kinds; that is, they can be the same or different clements be the sa Molecules containing atoms of two or more known as compounds different elements in specific proportions are Objective: Review and practice chemical concepts introduced in your lecture Using your lecture notes, textbook and the periodic table provided 1. Worksheet: identify in one or two sentences the following concepts related to the periodic table: Family or Group · Period Mctal Transition Element Non-metal . Inert gases Valencoe Electronegativity