States of Matter
Phase Changes are always a ________ change
What is a physical change?
A _______ property is used to describe/classify a substance.
What is a physical property?
Two or more substances that combine physically.
What is a mixture?
What is the nucleus?
How do you identify the group an element is in?
What is the number of the column it is in?
To move from one phase to another we must
What is increase or decrease the temperature?
Good conductor, high malleability, burning in the air, low melting point, boiling point, and atomic mass.
_____ does not belong because ________.
What is burning in the air because it is a chemical property and the others are physical properties?
The following equation is balanced (true or false)
H2O2 = 2H2 + 02
What is false?
It forms when two elements (same elements or different elements) combine chemically
What is a molecule?
elements are arranged by
What is increasing atomic number?
To make a liquid turn into a gas what must happen to the kinetic energy and temperature?
What is increase the kinetic energy and increase the temperature?
This forms a new substance. For example: Lighting fireworks
What is a chemical change?
What is that matter/mass cannot be created or destroyed?
The number of electrons an atom has if the atomic number is 9 and the atomic mass is 10.
What is 9?
Identify the GROUP & PERIOD the element Barium (Ba) is located in.
What is Group 2A & Period 6?
Name one example of sublimation
What is dry ice sitting on the counter?
Dissolving salt in water is
What is a physical change?
Two types of mixtures are
What are homogeneous and heterogeneous mixtures?
Electrons located in the outer ring/orbital are called
What are valence electrons?
How many valence electrons does the element Xenon (Xe) have in its outer energy level?
What is 8 valence electrons?
What 2 things are water particles doing if water is changing from a liquid to a block of ice?
What is slow down and move closer together (more compact)?
Adding energy does ________ to a reaction.
What is speeds up a reaction?
How many atoms are in the following compound
C6H12O6
What is 24?
The number of neutrons of an atom with an atomic number of 17 and an atomic mass of 35
What is 18?
Name two things that each element in a group have in common
What is the number of valence electrons and similar properties