Studied by 1 personWhich group of the periodic table is composed of inert (not reactive) gases?
Noble gases
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
Aufbau's Principle
Anions are ______ ions.
negative
What does the nucleus of an atom contain?
Protons and neutrons
The students measured length during a science experiment, they got 12cm. But the actual measurement was 14.25cm. What was the percent error?
15.79%
The Alkali metals have ______ valence electron
1
What atom matches this electron configuration? 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10
Zinc
Ionization energy is...
how much energy it takes to remove an electron from an atom
Contributes basically no mass to an atom.
electrons
What are the units for molar mass?
grams/mole
For a principle quantum number "n", equal to 6, is it possible for "l" to be equal to 7?
No
What do atoms of metals tend to do with their valence electrons when bonding with non-metals?
Donate them
Which has the greater EN?
Cl
How many molecules are in 2.5 mol of NaCl?
1.51x10^24
Which group of METALS is the most reactive?
Group 1 - Alkali Metals
He determined the mass of an electron and confirmed it's charge in 1909 as a result of oil drop experiments.
Millikan
Each column in the periodic table is called a
group
How many sig figs in the number 5.1 x 10^5?
2
Convert 5cm to mm:
50mm
The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?
20%
The atom with the largest atomic radius in Group 18 is -
Rn
Elements are
identified by very specific physical and chemical properties; substances that cannot be broken down to any other substance by physical or chemical means; represented by one or two letter symbols organized in the Periodic Table
For a p sublevel, "L" equals ______
1
Nonmetals ________ electrons when they become ions.
Gain
As you move down the periodic table atoms get bigger. This is because _______
The atoms have more energy levels.
At _______ degrees Celsius water freezes into a solid.
0
The density of this material is 2g/cm^3. There are 24cm^3 Find the total mass.
48g
What atom is represented by 35 protons, 45 neutrons, and 35 electrons?
Bromine
An atom's overall charge is __________.
neutral
What is the noble gas electron configuration for sulfur?
[Ne] 3s^2 3p^4
Jack has a rock. The rock has a mass of 14g and a volume of 2cm^3. What is the density of the rock?
7g/cm^3
What is the mass of one mole of aluminum?
26.982 g
If quantum number "n" = 3, what are the possible values for "L"
0,1,2
The temperature of the room is decreasing by 4 degrees Celsius.
Quantitive
Which has the greater EN:
F
Group 2 on the periodic table is known as
alkaline earth metals
The atomic number tells you what?
number of protons
Which atom has the largest atomic radius?
Francium
How many orbitals are there in the "d" sublevel?
5
How many valence electrons does hydrogen have?
1
Valence electrons are
electrons farthest from the nucleus
How many neutrons in C-14?
8
Which has the greater EN: N or C?
N
J.J. Thomson provided evidence that an atom...
contains negatively charged particles
Elements that are soft, extremely reactive metals are part of what group?
Alkali Metals
You know 16 cups = 1 gallon. Convert 3.5 gallons into cups.
56 cups
This is a negatively charged particle found outside the nucleus
Electron
The atomic number for Oxygen is 8, so
there are 8 protons in the atom
How many valence electrons are in an atom of P?
5
Alkaline Earth Metals have how many valence electrons?
2
How many electrons can occupy any one orbital?
2
True or False: The majority of an atom is made up of empty space
True
What is an atom?
the basic particle from which all elements are made
Which scientist conducted experiments using alpha particles and thin gold foil, which later helped him develop his model for the atom?
Ernest Rutherford
The photoelectric effect only occurs if the light shining on the metal is:
above a minimum frequency
Metals ________ electrons when they become ions
lose
Which periodic group has the smallest atomic radius?
Noble gases
How many neutrons does the isotope of lithium have?
5
How many minutes are in a year?
525,600 min
Convert from meters to cm: 9 meters
900 cm
This particle is found in the nucleus and has a positive charge
proton
What scientist is best known for his "Plum Pudding" model of the atom?
J.J. Thomas
As you move across the periodic table atoms tend to get smaller because, _________.
the atoms have more protons
What is this element? [Ar] 4s^2
Calcium
How many electrons can the first energy level hold?
2
What charge will a Beryllium ion have?
2+
Which is an example of a physical property of matter?
Water freezing to ice
How did Rutherford discover the proton?
Gold foil experiment
Which class of electromagnetic radiation has the least energy?
Radio
Trey is the fastest runner in the class!
qualitative
Which of the following will have a lower ionization energy than Scandium (Sc)?
Calcium (Ca)
The mass of a lead cube is 64 grams. This is an example of
physical extensive property
How many protons are in an atom of magnesium?
12
What atom matches this electron configuration? 1s^2 2s^2 2p^6 3s^2
Magnesium
What is the "L" quantum number for an f orbital?
3
Is melting butter for popcorn a chemical or physical change?
physical
How many sig figs in the number 100.010?
6
Which physical property of matter describes the relationship between mass and volume?
density
How many valence electrons does oxygen have?
6
When a measurement is repeatable and consistent it is said to have...
High precision
What atom matches this electron configuration? [Xe] 6s^2 4f^14 5d^9
Gold
How many valence electrons does Sulfur have?
6
What quantum number describes the energy level of an orbital?
n
All matter is made of what?
atoms
Who was awarded the nobel prize for his work on the photoelectric effect?
Albert Einstein
The Law of Conservation of Matter states that
matter is neither created nor destroyed in any process
John Dalton wrote postulates to make the idea of the atom useful. Which postulate below was proven wrong?
All elements are made up of tiny indivisible particles called atoms.
Which of the following will have a larger radius than Zinc?
Strontium
What charge will an aluminum ion have?
3+
The atoms along the staircase are called
metalloids
For a principle quantum number, "n", equal to 2, what is the total electron capacity of that level?
8
How close a measurement is to the true value is called...
Accuracy
Convert 8 kilometers to meters
8,000 meters
Physical properties of a substance include _______
color, odor and weight; density and specific gravity; melting point, boiling point and hardness
Elements in a _______ have similar chemical properties.
group
Who stated that all atoms of the same element are exactly alike?
Dalton
Which is a halogen
Chlorine
The lines in the emission spectrum for hydrogen are formed from _________.
energy given off when the electron moves from higher energy levels to lower energy levels
How many valence electrons are in an atom of Ba?
2
Which is NOT an example of a physical property of matter?
ability to rust
Note
Flashcard