Chemistry 1
A snack mix is an example of this.
What is a mixture?
When two or more atoms are joined together chemically
What is Molecule
The number of valence electrons in group 7A elements.
What is 7?
Color, luster, odor
What are physical properties?
Flammability and oxidation
What is a chemical property?
Name the two properties of matter
What are Physical and Chemical
This type of mixture looks uniform throughout. Saltwater is a good example.
What is a homogenous mixture?
A substance formed by chemically combining two or more atoms of different elements is known as
What is Compound
What is H2O
Water
Giving off heat or light is a clue that this type of a change is occuring.
What is a chemical change?
Water is made of these two elements?
What is hydrogen and oxygen?
When acids and bases are mixed together in equal proportions the ---------- each other
What is Neutralize
The measure of acidity and alkalinity of a substance
What is PH
What term refers to anything that occupies space, physical and chemical properties and exists in gas, liquid or solid form
What is Matter
All matter exists in four forms solid, liquid, plasma and
What is gas
The elements can be found on the right side of the periodic table of the elements.
What are noble gasses?
There are this number of elements on the periodic table of the elements.
What is 118?
Only products that contain --------- can have a PH
What is Water
A product of a 4.5 PH is considered
What is Acidic
The chemical name for the compound with the formula KHCO3
What is potassium bicarbonate?
Elements represent unique forms of these little thingies. The building blocks of everything!
What are atoms.
When one chemical changes its state of matter, the change is called
What is Physical Change
The atomic number tells us this.
What is the number of protons?
There are this many periods on the periodic table of the elements.
What is seven?
Pure water with a PH of seven is considered to be
What is Neutral
ice is an example of a
What is Solid
The significant figures of 0.0320
What is three?
This is the smallest type of atom.
What is Hydrogen.
What type of change occurs when ice melts to water
What is Physical
This is made when salt is dissolved in water
What is Solution
an atom of an element has 15 protons, 15 electrons and 16 neutrons has an atomic mass of
What is 31
A product with a PH of 8.9 would be
What is Alkaline
Are we using a burner in today's lab?
What is no
Curling hair with a curling iron would be considered what type of change
What is Physical
Atoms bond together to form these.
What are molecules?
When a substance loses electrons, the substance is
What is Oxidized
The mathematics of chemistry
What is Stoichiometry
The head of a surfactant molecule is ---------, meaning water loving
What is Hydrophilic
the chemical name for the compound with the formula Na2S
What is sodium sulfide
Neon and Argon are examples of
What are Noble gases?
Giving a client a perm would be considered what type of change
What is Chemical