S
Step 1 of the Scientific Method
What is Make an Observation
This is the name for a particle that has a nucleus of protons and neutrons surrounded by a cloud of electrons. It is the basic particle of the chemical elements which are distinguished from each other by the number of protons that they have.
What is an Atom?
A basic part of a whole. In chemistry, refers to a simple substance that cannot be broken down into smaller parts or changed into another substance
What is an Element
This chemical compound NACL has a more common name. This is is used in many industrial processes, including cooking. It is often considered to taste opposite of sugar
What is sodium chloride or simply "salt"
How many groups and how many periods are on the periodic table of elements?
18 groups, 7 periods
Step 2 of the Scientific Method
What is Ask a Question
This is a group of two or more atoms held together by attractive forces known as chemical bonds.
What is a Molecule?
These are the 2 smallest Elements
Hydrogen and Helium
Represented as a formula in Chemistry as O2 (inhale)
Oxygen - it takes 2 atoms of O to make a molecule of Oxygen so we can breathe
Can either atoms, matter or elements be destroyed?
No, The Law of Conservation of Mass implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form.
(In science, a law is a general statement that explains a large number of observations.)
Step 3 of the Scientific Method
What is Test Hypothesis and Gather Data
This is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. (Note: N2 is a molecule H2O is both a this term and a molecule.)
What is a Compound?
This element has an atomic mass of 8
What is O - Oxygen
Chemical formula CO2 (exhale this)
Carbon dioxide - When we exhale, we breathe out less oxygen but more carbon dioxide than we inhale. The carbon we breathe out as carbon dioxide comes from the carbon in the food we eat. ... The carbon dioxide is dissolved in the blood, carried to the lungs by the circulation, and breathed out
Name a job that uses Chemistry
There are so many right answers :)
What is Examine Test Results
It is the positively charged particle that, together with the electrically neutral particles called neutrons, make up the nucleus of an atom.
What is a Proton
This element has an atomic mass of 19
What is K - Potassium
Elements AG and AU are used in jewelry
Silver and Gold
The number of protons in the element Iron
Iron is Fe which has 26 protons
What is Report Findings
What is Atomic Number
This is the largest element? (clue: it's in group 1)
Fr Francium - Francium has no known biological role. It is toxic due to its radioactivity. Francium is obtained by the neutron bombardment of radium in a nuclear reactor. It can also be made by bombarding thorium with protons.
Discovered by a woman 1939 by Marguerite Perey at the Curie Institute in Paris
Bombardment = a high-energy neutron is directed towards a nucleus to make more nuclei
This is the name for the elements in group 18 on the Periodic Table
The Noble Gases - the valence shells of noble gases are completely filled, they do not combine with other elements to form compounds so they are often chemically unreactive.
Give an example of a Chemical Reaction
Combustion, Burning, Digestion of food, Boiling, Baking,Milk going sour, so many :)