Question | Answer |
Determine the # of significant digits .008 | 1 |
Determine the # of significant digits .0080 | 2 |
Determine the # of significant digits 1.0010 | 5 |
Which digit is estimated in this measurement .703 | 3 |
What is the horizontal row of blocks in the periodic table called | Period |
What do elements in a group have in common | Electron configurations |
What is a vertical column of elements | Groups |
What's 3 categories are elements separated into | Metals nonmetals and Metalloids |
Which type of elements shares both properties of metals and nonmetals | Metalloids |
Where are the metalloids located in the periodic table lost the metalloids | On the heavy stair step line; B, Si, Ge, As, Sb, Te, At |
What are the 7base units | Length mass temperature time amount of substance luminous intensity electric current |
Which of the following observations is quantitative? Brown. Soft 12.00 grams | 12.00 grams |
Why is liter NOT considered a base unit | Its derived from meters |
What are the symbols of the 1 base units | Meter: M
Kilograms: kg
Kelvin: K
Second; s
Mole: mol
Candela: cd
Ampere: A |
Which group of measurements is the most precise | 2 g, 2.5 g, 3 g |
Write the correct symbol for an atom of boron-10 | 10/5 Boron |
What is the charge on the nucleus of an atom | Positive |
What is the mass of an aluminum bar that has the density of 2.70 g/cm3 and a volume of 1.70cm3? | m=4.59 g |
What nuclear particle has about the same mass as a proton, but with no electrical charge | electron |
Which part of an atomm has approximately equal 1/2000 of mass of a common hydrogen atom? | electron |
The nucleus of most atoms is composed of _________ and ________ | Protons, neutrons |
What makes up most of the volume of the atom? | Electron Cloud |
What makes up most of the mass of the atom? | Nucleus |
isotopes of an element contain different numbers of | Neutrons |
____________ number = total number of protons and neutron in the nucleus | atomic |
Write the isotopes symbols for copper-64 and copper-65 | 64/29 Cu 65/29 Cu |
As the sotmic number increases, the number of electrons | increases |
What is the mass in amu of carbon-13 isotope | 13 amu |
An aluminum isotopes consists fo 13 protons, 13 electrons and 15 neutrons. What is the mass number? | 13 |
Zn-65 has _____ neutrons | 35 |
An electrically neutral atom of boron has____ protons, _____ electrons, and ____ neutrons | 5, 5, 11, |
What is the study of the structure and composition of matter and the changes it undergoes | Chemistry |
What is the volume of a sugar cube that is 2.14 times 10-2m by 8.4 times 10-3m? | 9.4 times 10-7 m3 |
Which branch of chemistry deals with the study of materials and process that occur in living things | Biology |
Define matter | Physical an chemical structure, matter is made of atoms |
What are 2 measurable properties of all samples of matter | solid, liquid |
List examples of a chemical changes | rusting of iron |
List examples of physical changes | crushing a can |
Which type of mixture has more than one phase | heterogeneous |
what is another name for a homogeneous mixture? Give example | Solution, water, soda |
Which state of matter is characterized by having an indefinite shape, but a definite volume | Liquid |
To which group do cesium and francium belong | group 1 |
To which group to iodine and bromine belong | halogens |
What period does this element belongs with the following electron configurations [Xe] 6s1 | Cs 55 |
Which of the following quantum leaps would be associated with the greatest energy of emitted light | n=5 n=1 |
The first letter of a chemical symbol is always | Capitalized |
Liquid, Gas, or Solid: Packed closely together | liquid |
Liquid, Gas, or Solid: very fain motion r apart | gas |
Liquid, Gas, or Solid: constantly | solid |
Liquid, Gas, or Solid; able to slide past each other | gas |
What is a pure substance | Made of only one type of atom or only type of molecule |
What is the difference between an element and a compound | compounds contains atoms of differ. elements. elements are chemical substance |
Atoms or Compounds? B-11 | Atoms |
Atoms or Compounds? Co2 | Compounds |
Atoms or Compounds? O-18 | Atoms |
Atoms or Compounds? H-3 | Atoms |
What element has the electron configuration: 1s2, 2s2, 2p6,3s2, 3p4? | Sulfur |
What can you infer about the reactivity of group 18? | It is a noble gas |
What is the smallest particle of an element that retains properties of that element? | Electrons |
How many protons, neutrons, and electrons are in an atom of barium | 56 protons, 56 neutrons, and 56 ellectrons |
All forms of electromagnetic radiation travel as the same | speed |
What element in the third period has the largest radius | Sodium |
What is an orbital | Electron density formed in an atom or molecule by one or more electrons |
How is an orbit different from an orbital | Orbit: well defined circular path followed by electrons
Orbital: space around the nucleus |
What are the shapes of s, p, and d, orbital | s: sphere
p: dumbbell
d: double dumbbell |
An electron for which n=3 has more_____ than an electron for which n=2 | energy |
How many orientations in space does the s orbital have? p and d orbital? | s: 1
p: 3
d: 5 |
What is teh difference between a 2p and 3p orbital | 3p has a higher enegry level |
How many mm are there in 0.05 | .5mm |
1.10 L water is equal to _______ml | 1100 ml |
If a measurement closely aggres with accepted values it is said to be | accurate |
If you frequently carry out the same experiment you should have high | precision |
How many sig figs are there in these: 0.0067g | 2 |
How many sig figs are there in these: .008 g | 1 |
How many sig figs are there in these: .0080 g | 2 |
How many sig figs are there in these: 1.0010 g | 5 |
How many sig figs are there in these: 10000 m | 5 |
Express in scientific notation; 0.00007 g | 7 times 10 -5 |
Express in scientific notation: 7789000 kg | 7.78 times 10-6 |
Divide 10^8 by 10^-3 | 105 |
What is the product of 7.76 time 10^24 multiplied by 8.78 times 10^3 | 1.65 times 10 ^ 25 |
What is the sum of 7.76 time 10^24 and 8.78 times 10^23 | 8.64 times 10^24 |
What does the grapg look like if the relationship is a direct proportion? | Straight through the oirgin |
What did Rutherford conclude about atoms from his gold foil experiment. | Atoms are empty space |
What variable is directly proportional to frequency? | Energy of Photon |
How are frequency and wavelength related | The higher frequency, shorter the wavelength |
Determine the energy of a photon having a frequency of 5 time 10^8 Hz. | 3 times 10 ^-25 |
How many electrons can be occupy the s orbital | 2 |
What is the electron configuration of Ca | [Ar] 4s2 |
What is the electron configuration for an atom with 10 electrons | 1s2 2s2 2p6 |
Meneleev left spaces in his periodic table and predicted several elements and their | properties |
What is the name of the group of elements from 90-103 and 58-71 called | Actinides elements and Lanthanide series |
What is the periodic law | Function of atomic # |
What groups o the f orbital belongs to | f block |
What is a positive an negative ion called | Positive is called Cation while Negative is called Anions |
if the spin of one election in an orbital is clockwise, what is the spin of the other electron in that orbital | Counterclockwise |
How does an electron jump from one energy level to another? | teleporting to level a to level b |
How is an atom different from an ion | Atoms are neutral containing the same number of protons as electrons. Ions electrically charged particles produced either removing electrons |
How many unpaired electron does oxygen have | 2 |
What is the trend of ionization energies down a group | Increase from left to right |
How does the atomic radius change as you move from left to right across a period | Across a period from left to right radius decreases. Move left to right atoms have more electrons in their outer energy level. |
What are the rules for addition and subtraction with significant digits | Look at the decimal point. Count the number of significant figures in the decimal portion of each number |
What are the rules for multiplication and division with significant digits | Least number tells you the significant digits that need to be in your answer |
What is noble gas notation | shorthand versions of the electron configurations |
What are the 3 rules for writing electron configurations | Aufbau, Pauli, Hunds are the 3 rules |
Who was the man who lived from 460 BC-370-BC and was among the first to suggest the idea of atoms | Democritus |
What unit is used to measure weighted averyage atomic mass | amu |