The element that has 8 protons.
What is Oxygen.
The mass of an atom includes these two particles added together.
What are protons and neutrons?
Water is neutral and has a pH number of approximately ____.
What is 7?
Water is a __________ which means it has a consistent ratio of 2 hydrogens to 1 Oxygen.
What is a compound?
The number of electrons needed to fill the valance or outer shell for most elements. (Exception Hydrogen, Helium and Lithium can be satisfied with only 2)
Most organic materials are made from non-metals that share electrons in pairs. These bonds can be single, ______, or even triple bonds.
What are double bonds?
The number of protons equals the number of electrons in atoms without a charge. This is called a _________ atom. (hint starts with an "n")
What is neutral?
pH of strong acids or bases can be harmful to body tissues. Which of the following chemicals could cause damage to cells and tissues? (list all)
Bleach, Hydrochloric Acid (pH1) (stomach acid), Seawater, Cola, Oven Cleaner
What are Bleach, Hydrochloric Acid, and Oven Cleaner?
There are two types of bonds when working with more than one water molecule. This bond attracts water molecules together so that they "stick" and is also called cohesion.
What is a hydrogen bond?
A metal such as Calcium will form this type of bond with a Non-metal such as Florine.
Hydrogen is more likely to form this type of bond because even though it is found with the metals, it is not actually a metal.
What is covalent?
Isotopes of Carbon are studied to determine the age of fossils. Isotopes are atoms of the same elements but have different amounts of the subatomic particles _________.
What are neutrons?
What is CO2 or Carbon Dioxide?
What is positive?
This element covalently bonds with other atoms of the same element to form large chains or rings. This is the basis of living organisms on earth.
What is Carbon?
All elements in the last column (Xenon, Neon, Helium) Have this trait in common. Because of this property, they do not chemically bond with other elements.
Elements called ________ __________ such as zinc, magnesium, and selenium are in very small quantities found in the body. These are very important for many biological functions including building tissues, immunity, and nutrient transport.
What are trace elements?
(would the pH go up or down from the original acid?)
Elements that give away electrons become _______ charged. These are called "cat-ions".
What is positively?
Carbon is so chemically versatile because it can form up to ____ different bonds with other atoms, including other carbons.
These 4 elements are the MOST abundant in the human body.
What are Carbon, Hydrogen, Oxygen, and Nitrogen?
What is Denaturation?
What is water?
Some amino acids and water both form attraction bonds with other compounds because of their slightly positive charges. This is called what kind of a bond?
What is a Hydrogen bond?