Presentation on theme: "A neutron walks into a shop and says, “I’d like a coke." The shopkeeper serves up the coke. "How much will that be?" asks the neutron. The shopkeeper."— Presentation transcript:
A neutron walks into a shop and says, “I’d like a coke." The shopkeeper serves up the coke. "How much will that be?" asks the neutron. The shopkeeper replies, "For you? No charge."
Chapter 1 Secs. 1-3 All matter is made up of atoms Elements Make Up the Periodic Table Atoms and the Periodic Table Reading the Periodic Table
This particular element accounts for about 90% of the total mass of the universe. Hydrogen
Who was the British scientist who proposed the idea that each element is made up of tiny particles called atoms? John Dalton
Atoms are composed of three particles. Name the three and describe each one’s charge. Proton-positively charged particle Neutron- uncharged particle Electron- negatively charged particle
What type of charge does the nucleus of an atom contain? Positive—why??
What specific type of metals fall under group 2? Alkaline Earth Metal
This is a one or two letter code that is used to depict the name of the element. Chemical Symbol
True or False. The modern periodic table is organized by only it’s category (metal, nonmetal, metalloid). False. It is organized by atomic number and by the properties of the elements.
How can you determine the # of neutrons in an element’s atoms? Atomic Mass - Atomic Number (# of protons/neutrons - # of protons)
______ are atoms of the same element that have a different number of neutrons. Isotopes
When an atom gains one or more electrons we call it a ________ ______. Negative Ion
What part of the periodic table tells you the state of matter at room temperature? Chemical Symbol Color
What are the three basic categories on the periodic table and how are they identified? Metals, Non metals, and Metalloids. Color of the box.
How many electrons does a neutral Radon atom have? (Use your textbook) 86—how did you know this?? “Neutral” means it ha no charge, so if you found the # of protons (atomic number) you know the # of electrons.
The atomic mass represents the number of protons in an atom’s nucleus. FALSE; Atomic number
The elements in group 1 are known as... Alkali Metals
What is the atomic mass of the element found at Group 10, Period 4? (use textbook) Nickel
The elements found in groups 3-12 are known as _________ _________. Transition Metal
What is the atomic number of the element that is a liquid at room temperature and can be found in the Halogen group? 35; Bromine – Br Halogen is group 17
What is the chemical symbol of the only element that is a metal, but is a liquid at room temperature? Hg- Mercury
161 Neutrons Atomic Mass - Atomic Number = 161 Neutrons How many neutrons does an average atom of Hassium contain? (# of protons: 108)