Matter & Changes
Periodic Table
Atom Structure & Electron Arrangement
Ions & Chemical Reactivity
10
I am anything that has mass and takes up space (volume). What am I?
Matter
10
What number do you use to find the number of protons in an atom?
The Atomic Number
10
Name all 3 types of subatomic particles.
Protons, neutrons, electrons
10
What is the difference between an atom and an ion?
Atoms: Neutral, same number of protons & electrons
Ions: Charged, have either more or less electrons than protons.
20
I am made up of two or more different types of particles. What am I?
A Mixture
20
What are the names for rows and columns on the periodic table?
Rows: Periods
Columns: Groups
20
What is the maximum number of electrons in the first energy shell?
2
20
When are atoms the most stable?
When they have 8 valence electrons.
30
Baking a cake results in what kind of change?
Chemical Change
30
Why do elements in the same group have similar chemical properties?
Same number of valence electrons, so they react in similar ways and have similar chemical properties.
30
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Atomic Mass
30
How are ions formed?
Ions are formed when atoms lose or gain electrons and become electrically charged.
40
Describe the characteristics of a physical change.
No new substance formed - only changes in appearance.
Changes in state. Usually reversible.
40
What is another name for Group 18 elements?
Noble Gases
40
What is a "Valence Shell"?
The outermost energy level (shell) of an atom that contains electrons.
40
Draw the Bohr diagram for a Magnesium ion
50
What is the difference between an element and a compound?
Element - made up of only one type of atom.
Compound - substances made from atoms of different elements joined by chemical bonds.
50
Hydrogen, Sulfur, and Xenon are all what type of element?
Non-metals
50
Draw the Bohr diagram for Si
50
An element in Group 3 will have what ion charge, and why?
+3
Atoms in this group have 3 valence electrons. It will be easier for elements in this group to form ions by losing those 3 valence electrons rather than gaining 5.
60
Name 1 difference between a homogeneous mixture and a heterogeneous mixture
HOMOGENEOUS: evenly mixed, looks the same everywhere, cannot see differences
HETEROGENEOUS: not evenly mixed, different parts can be seen
60
Lithium, Potassium, and Rubidium belong to what family?
Alkali metals
60
How many neutrons does Silver have?
Atomic Mass - Atomic Number = Neutrons
108 - 47 = 61
60
What is a multivalent metal?
A metal that can form ions in more than one way.