Elements & Compounds
What is the most noticeable difference between an Element and a Compound?
What is: Elements are pure substances made up of only one type of element of atom while compounds are two or more different elements chemically combined
Atoms that gain electrons become?
what is negative
Fill in the blank:
water is a----- molecule
what is nuteural
If a substance was rated 7 on the PH scale what would it be classified as?
what is Neutral
This rule is when atoms want 8 electrons in their outer shell (valence shell)
What is the Octet Rule
What are the 6 most common elements in ALL living things?
What is Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur
Atoms that lose electrons become?
What is Positive
what bonds form between the oxogen and the hydrogen atmos in the same molecule?
What is Hydrogen
Substances that are raked between 8-14 on the PH scale are considered?
What is more Basic?
What bond is the strongest?
What is the Covalent Bond
In covalent bonds, Atoms share what?
What is Electrons
Like charges do what?
What is atract
What is Repel
What bonds form between the oxogen and hydrogen atoms in different water molecules?
What is covalent
Substances that are ranked 0-6 on the PH scale are classified as?
what is more acidic?
Vitamin D is an organic molecule that regulates the body's absorption of calcium. Which of the following elements is most common in molecules of Vitamin D
A: aluminum B: Carbon C:Sodium
What is B: Carbon
In non-polar covalent bonds Atoms in a molecule share electrons evenly and Polar covalent bonds Electrons are?
What is not shared evenly
Fill in the blank:
One atoms ----- its electron(s) to another atom
what is transfers
Fill in the blank:
Hydrophilic molecules ---- of their own. Their positive and negative parts will mix with water's charged parts.
what is charge
Bleach is ranked as 9.4 on the PH scale, bleach is considered what?
what is a base
This substance does the dissolving?
What is Solvent
Bonds that share electrons are called?
What are non-polar-covalent bonds
One of the ways your body uses ions is to communicate between your ----- and ------ systems.
What is Nervous and Muscular
Between Oil and Water, which is nonpolar?
what is oil
What substance is completely neutral?
What is water
This substance is being dissolved?
what is Solute