Matter
What are the three stages of matter?
Solids, Liquids, Gases
How many naturally occurring Elements are there?
90
What is the pH of water?
7
What is the term for substances that are incapable of being mixed?
Immiscible
Which type of chemistry involves the element of Carbon and all living things?
Organic Chemistry
What is the simplest form of matter?
An Element
What is formed by joining two or more atoms chemically?
Molecule
I turn litmus paper red. I taste sour and pH is lower than 7.
What am I?
An acidic solution
I am a physical mixture made of two immiscible substances that separate quickly.
I have a larger molecular size that solutions.
Suspensions
What is something we can see that is not considered matter?
Visible light and electric sparks (energy)
What are the smallest particles of an element called?
An Atom
True or False:
Human skin has a pH level of 6.5
False!!
4.5-5.5
I am the substance that dissolves the solute to form a solution.
A solvent
What is the process through which oxygen is subtracted from, or hydrogen is added to, a substance through a chemical reaction?
Reduction
What are characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the identity of the substance?
Physical Properties
What are atoms made up of?
Hint: Charges
Protons, Neutrons and Electrons
I am also known as a base.
Alkalis
I am a substance that is used to emulsify oil and water to create an emulsion.
Surfactants
What is the raection that causes an atom or molecule to split in two, creating a pair of ions with opposite electrical charges?
Ionization
What is a change in the chemical composition of a substance, in which a new substance or substances are formed having properties different from the original?
A chemical change
I contain two or more atoms of the same element that are united chemically.
Elemental Molecule
DAILY DOUBLE!
Please state the terms for electrically charged ions and tell us which is negative and which is positive.
Cation - Positive charge
Anion - Negative charge
I am the term for the water loving head of a surfactant molecule.
Hydrophilic
This reaction occurs when an acid is mixed with an alkali, also called a base, in equal proportions to neutralize each other and form water and a salt.
Acid-alkali neutralization reactions