1.
How are elements arranged on the periodic table?: • Elements are arranged on the periodic table in order of increasing atomic number
2.
How do you calculate protons, neutrons, and electrons from these numbers?: • You calculate protons, neutrons, and electrons from these numbers by using the atomic number for the protons and electrons. For neutrons do mass number (minus) atomic number
3.
How many rows are there and what are they called?: • There are 7 rows.
• These rows are called periods
4.
What are the names given to group 1, group 2, group 17 and group 18?: • The names given are Group 1- Alkali metals Group 2- Alkaline metals Group 17- Halogens Group 18- Noble Gases
5.
What are the properties of metals, non-metals, and metalloids?: • The properties of metals are solid (except Hg), shiny, conducts heat and electricity, malleable and ductile
• The properties of non-metals are some solid, some gas, 1 liquid (Br), dull, does not conduct heat or electricity, brittle, not ductile
• The properties of metalloids are solid, shiny, dull, may conduct heat, does not conduct electricity, brittle, not ductile.
6.
What are the states of elements at room temperature?: • The states of elements are room temperature are liquid (blue), gas (red), solid (black), synthetic (clear)
7.
What are the three types of subatomic particles?
Where are they found in the atom?: • The three types of subatomic particles are
1. Protons
2. Neutrons
3. Electrons
• They are found in the atom
Protons and neutrons are found in nucleus. Electrons are found orbiting nucleus
8.
What did Rutherford propose for the structure of the atom?
Draw his model: • He proposed that the structure of the atom had protons in the nucleus
• Drawing: http://www.clickandlearn.org/Gr9_Sci/atoms/dalton.gif
9.
What does the atomic number tell you?: • The atomic number tells you the number of protons.
10.
What does the mass number tell you?: • The mass number tells you the number of protons and neutrons
11.
What electrons are involved in bonding between atoms?: • The electrons involved in bonding between atoms are valence electrons
12.
What is a covalent bond?: • This bond is two non-metals that are sharing electrons
13.
What is a metallic bond?: • This bond is a "sea of electron model"
• Valence electrons of one metal atom overlap with valence electrons of another metal atom
• It has loose attraction
• Weak bond
14.
What is an ionic bond?: • An ionic bond is a transfer of electrons from metal to non-metal
• It creates positive ions and negative ions which attrarct
• It is a strong bond
15.
What is an isotope?: • An isotope is two atoms of an element
• It has the same # of protons, and a different # of neutrons
16.
What is the charge on each type of particle?: • The charge on each particle is
1. Protons → positive
2. Neutrons→ neutral
3. Electrons→ negative
17.
What kind of bond is made when electrons are not equally shared?: • The kind of bond that is made when electrons are not equally shared is a polar covalent bond
18.
What makes a molecule polar or non-polar?: • A molecule is polar or non-polar depending on whether it is symmetrical
• It has no lone electron pairs on middle atom
19.
What makes some elements want electrons more than other elements?: • Some elements want electrons more than other elements because they have a higher value of electronegativity.
20.
What model of the atom did Schrodinger and Heisenberg develop?
What was this model based on?
What does it look like?: • The model of the atom that they developed is the quantum model of the atom
• Their model is based on the probability of finding an electron around the nucleus
21.
What two subatomic particles did Thomson discover?
What is his model? Draw it: • The two subatomic particles he discovered are
1. Electron
2. Proton
• His model is based on
• Drawing:
http://www.clickandlearn.org/Gr9_Sci/atoms/chocchip.gif
22.
What was Dalton's law?
What did it say?: • The four points of Daltons Theory of Matter are:
1. All matter is made up of small particles called atoms
2. Atoms can't be created, destroyed, or divided
3. Atoms of one element can't be converted to atoms of another element
4. Atoms of different elements combine in specific whole number ratios
• His model is of the atom
• Drawing: •
23.
What was Lavoisier's law?
What did it say?: • His law was "Law of Conservation of Mass"
• This law says that in a chemical reaction, the amount of matter that goes in is the amount of mass that goes out.
24.
Where are the metals, non-metals and metalloids?: • The metals are left of the red staircase line
• The non-metals are right of red staircase line
• The metalloids are touching redline (one side of box)→properties of both metals and nonmetals
25.
Who was Democritis?
What did he believe in?: • He was a Greek philosopher
• He believed that matter can be broken down into smaller pieces until it can no longer be divided
