Structure and Bonding
Particles and Purification
Atoms, Elements and Compounds
Chemical Calculations
Chemical Changes
100
Which of these is the property of an Ionic compound?
A) Low melting point
B) Poor conductor of electricity
C) Crystal Shape
D) Shared Electrons
What is Crystal Shape?
Explanation. Ionic compounds have high melting points, conduct electricity when dissolved in water, are shaped into crystals, and transfer electrons.
100
Diffusion is when particles move from _____ concentration to _____ concentration.
What is from higher to lower?
100
What is the smallest particle?
What is an atom?
100
How much does a mole contain?
What is 6 X 1023?
100
What kind of properties results in the substance changing into a new substance?
What is chemical change?
200
What do you call ions that are made of more than one atom?
What is Polyatomic Ions?
200
gas to liquid
What changes of state is this?
What is condense?
200
How many electrons are in Tin?
What is 50?
200
What is an actual yield?
What is the amount of product we get in a reaction?
200
Is wood burning a physical or chemical change?
What is chemical change?
300
How many chloride ions are needed to cancel the 2+ charge of magnesium in magnesium chloride?
What is 2?
300
True or False
The Brownian Motion gives us evidence for the kinetic particle model of matter.
What is True?
300
All matter is made up of ____.
What is atom?
300
What do empirical formulas show?
What is the simplest whole number ratio of the element present in the compound?
300
During Photosynthesis energy is absorbed. What kind of reaction is it?
What is endothermic
400
What is the name given to the outermost electron(s)?
What is Valence electrons?
400
Diffusion in two miscible liquids is ____ than diffusion in gases
What is slower?
400
The central region of an atom where its neutrons and protons are is called the _____.
What is a nucleus?
400
The reactant that is not in excess is called?
What is limiting reactants or limiting reagent?
400
The Law of Conservation of Mass tells us matter can't ______________.
What is created or destroyed?
500
Iodine is in group 7. Is the charge positive or negative?
What is negative?
500
What kind of proccess does this show?
what is filtration?
500
What only has one type of atom?
What is element?
500
What is the formula to find out the % of purity?
Mass of pure product
__________________ X 100
Mass of impure product
500
Which of the following IS a clue that a chemical change has occurred?
A) State of matter change
B) Size Change
C) Change in temperature
D) Shape change
What is C?