Test 1 Prep

How many significant digits should be reported in the answer to the following calculation? 4.3 - 3.7 = A. 3 B. 1 C. 2 D. 4 E. none of the above

1

How many milliliters are in 17.5 L? A. 1.75 x 10 (3rd power) B. 175 C. 1.75 x 10 (-2nd power) D. 1.75 x 10 (4th power) E. none of the above

1.75 x 10 (4th power)

How many core electrons (inner electrons) are in a chlorine atom? A. 1 B. 7 C. 17 D. 10 E. none of the above

10

The atomic numer for Potassium is: A. 15 B. 19 C. 30.97 D. 39.0983

19

If the electron configuration of a ground state potassium atom is 1s22s22p63s1, the electron configuration of the potassium cation (K+) would be: A. 1s12s22p63s1 B. 1s22s22p6 C. 1s22s22p63s1 D. 1s22s22p63s2 E. none of the above

1s22s22p6

What is the electron configuration for Kr? A. 1s22s22p63s23p24s 23d104p6 B. 1s22s22p63s23p64s 23d24p6 C. 1s22s22p63s23p43d 104s24p6 D. none of the above E. 1s22s22p63s23p64s 23d104p6

1s22s22p63s23p64s 23d104p6

How many electrons are unpaired in the orbitals of carbon? A. 6 B. 4 C. 2 D. 12 E. none of the above

2

The atomic mass for Sodium is: A. 22.989770 B. 32.066 C. 16 D. 11

22.89770

Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot with the dimensions of 10.0 in x 4.00 in x 3.00 in. A. 102 B. 0.161 C. 2.32 x 10 (3rd power) D. 3.80 x 10 (4th power) E. none of the above

3.80 x 10 (4th power)

A carbon atom has _______ valence electrons A. 11 B. 4 C. 10

4

How many sublevels are there in the n = 4 principal shell? A. 2 B. 3 C. 1 D. 4 E. not enough information

4

The correct number of significant figures in the number 0.002320 is: A. 3 B. 7 C. 4 D. ambiguous E. none of the above

4

How many centimeters are in 2.80 ft? (in = 2.54 cm) A. 85.3 B. 4.29 C. 0.233 D. 34 E. none of the above

85.3

What is the atomic symbol for silver? A. Ag B. S C. Au D. Si E. none of the above

Ag

What is the formula for an ionic compound made of carbon and oxygen? A. CO B. CO3 C. CO2 D. C2O E. Carbon and oxygen do not form an ionic compound

Carbon and oxygen do not from an ionic compound

Which of the following statements about ions is INCORRECT? A. Cations are formed when an atom loses electrons B. Anions are formed when an atom gains electrons C. Cations are positive ions and anions are negative ions D. Cations are formed when an atom gains protons E. All statements are correct

Cations are formed when an atom gains protons

What is the correct formula for a potassium ion with 18 electrons? A. K- B. K+ C. P+ D. P- E. none of the above

K+

Which of the following elements has only 12 protons? A. Zn B. Mg C. C D. O E. none of the above

Mg

What is the formula for an ionic compound made of magnesium and sulfur? A. MgS2 B. Mg2S3 C. MgS D. Mg2S E. none of the above

MgS

Which of the following elements has the highest ionization energy? A. Ne B. Ba C. Ca D. Al E. Cl

Ne

What is the atomic symbol for tin? A. Sn B. Tn C. Ti D. Si E. none of the above

Sn

Which of the following is an example of an observation? A. Reactions occur due to the transfer of electrons B. Flammable objects contain phlogiston C. All matter is composed of small, indestructible particles called atoms D. When a can of soda pop is opened, a fizzing sound is heard E. none of the above

When a can of soda pop is opened, a fizzing sound is heard

What is the electron configuration for P? A. [Ne]3s23p3 B. [Ar]3s23p3 C. [Ne]1s21p62s22p3 D. [Ar]3s23p64s23d104p 3 E. none of the above

[Ne]3s23p3

When an atom loses an electron, the resulting particle is called A. an anion B. a proton C. a cation D. an isotope E. none of the above

a cation

Which of the following statements about compounds is TRUE? A. A substance composed of two or more elements in fixed, definite proportions. B. A pure substance that has variable composition throughout. C. A substance that is not as common as pure elements. D. A substance that cannot be broken down into simpler substances. E. none of the above

a substance composed of two or more elements in fixed, definite proportions

Group 1A elements are also called: A. alkaline earth metals B. alkali metals C. noble gases D. halogens E. none of the above

alkali metals

Group 2A elements are also called: A. noble gases B. alkali metals C. alkaline earth metals D. halogens E. none of the above

alkaline earth metals

What do the alkali metals all have in common? A. They all have similar physical properties B. They all form +1 ions C. They all have the same number of valence electrons D. They all undergo similar reactions E. all of the above

all of the above

Which of the following items does not contain chemicals? A. drain cleaner B. air C. insecticides D. organically grown vegetables E. All of the above contain chemicals

all the above contain chemicals

What is the name of Ca(NO3)2? A. calcium nitrate B. calcium nitride C. calcium nitrite D. calcium dinitrite E. none of the above

calcium nitrate

What is correct name of the compound whose formula is N2O4 ? A. nitrogen tetroxide B. nitrogen dioxide C. dinitrogen oxide D. dinitrogen tetroxide E. none of the above

dinitrogen tetroxide

The size of an atom generally increases A. up a group and diagonally across the Periodic Table B. up a group and from left to right across a period C. up a group and from right to left across a period D. down a group and from left to right across a period E. down a group and from right to left across a period

down a group and from right to left across a period

Uranium (U) belongs in the: A. s block B. d block C. f block D. p block

f block

Given the following list of densities, which materials would float in a molten vat of lead provided that they do not themselves melt? Densities (g/mL): lead = 11.4, glass = 2.6, gold = 19.3, charcoal = 0.57, platinum = 21.4. A. gold and platinum B. gold and charcoal C. glass and charcoal D. gold, platinum, glass and coal E. none of the above

glass and charcoal

Group 7A elements are also called: A. noble gases B. alkali metals C. halogens D. alkaline earth metals E. none of the above

halogens

Which of the following is an example of a scientific law? A. When a can of soda pop is opened, a fizzing sound is heard. B. Flammable objects contain phlogiston. C. All matter is composed of small, indestructible particles called atoms. D. In a chemical reaction, matter is neither created nor destroyed. E. none of the above

in chemical reaction, matter is neither created nor destroyed

Metals are located where on the periodic table? A. ony in the middle B. adjacent to the zig-zag diagonal line C. left side D. right side E. none of the above

left side

Choose the pair of names and formulas that do not match. A. calcium nitrate: Ca(NO3)2 B. lithium sulfate: LiSO4 C. strontium carbonate: SrCO3

lithium sulfate: LiSO4

When an electron absorbs energy, it may move from ____________ energy level to ___________ energy level. A. higher , lower B. lower , higher C. turns into an atom

lower, higher

Carbon monoxide is considered which of the following? A. ionic compound B. molecular compound C. atomic element D. molecular element E. none of the above

molecular compound

Fluorine is considered which of the following? A. molecular compound B. ionic compound C. molecular element D. atomic element E. none of the above

molecular element

What is the correct chemical symbol for mercury? A. My B. Hy C. Me D. Hm E. none of the above

none of the above

The principal quantum number (n): A. specifies the subshell of the orbital. B. specifies the maximum number of electrons. C. specifies the principal shell of the orbital. D. specifies the 3-D shape of the orbital. E. none of the above

specifies the principal shell of the orbital

All of the following statements about different elements are true EXCEPT: A. Krypton is one of the noble gases. B. Sulfur is considered a metalloid. C. Barium is an alkaline earth metal. D. Manganese is a transition metal. E. Iodine is a halogen

sulfur is considered a metalloid

What happens to an atom when it absorbs energy? A. The atom re-emits the energy as light. B. The atom re-emits the energy as heat. C. The extra energy increases the speed of the electrons in their orbitals. D. The atom stores the energy for later use. E. none of the above

the atom re-emits the energy as light

A good definition of chemistry is: A. the science that seeks to understand what living organisms do by studying the molecules that make up the organism. B. the science that seeks to understand what matter does by studying what atoms and molecules do. C. the science that seeks to understand what the universe does by studying interactions of molecules with atoms. D. the science that seeks to understand the interactions of molecules for the sake of advancing human control over nature. E. none of the above

the science that seeks to understand what matter does by studying what atoms and molecules do

When elements combine to form compounds, A. their properties are an average of all elements in the compound B. their properties do not change C. their properties are completely random D. their properties change completely E. none of the above

their properties change completely

Which of the following items is not a common unit of energy? A. calorie B. joule C. torr D. none of the above

torr

How are wavelength and frequency of light related? A. Wavelength increases as frequency increases B. Wavelength is one-half of the frequency C. Wavelength is independent of frequency D. Wavelength increases as the frequency decreases E. Wavelength is double the frequency

wavelength increases as the frequency decreases

Metalloids are located where on the periodic table? A. left side B. zig-zag diagonal line C. right side D. middle E. none of the above

zig-zag diagonal line