chapter 17&18 test

which has the greatest number of protons in it's nucleus A) lead B) gold C) mercury D) silver

A) lead

the alkali metals (group 1) tend to form 1+ ions white the alkali-earth metals (group 2) tend to form 2+ ions because A) the charges of these ions corresponds to the number of valence electrons that may be lost B) alkali metals are less massive

A) the charges of these ions corresponds to the number of valence electrons that may be lost

how is it possible that as atoms get more massive they become larger in size? A) the more massive atoms have a greater number of atomic shells B) this is not generally the case with atoms

A) the more massive atoms have a greater number of atomic shells

Is it relatively easy to pull an electron away from a potassium atom, but very difficult to remove a second one because A) the second electron experiences a far greater effective nuclear charge B) the energy spent in removing the first electron is no longer available

A) the second electron experiences a far greater effective nuclear charge

when adding the s, p, and d orbitals for the element copper, the number of total electrons is A) 18 B) 29 C) 64 D) not enough info

B) 29

Which of these atoms has the greatest amount of electrical charge in its nucleus? A) carbon B) uranium C) helium D) iron

B) uranium

starting at the left of each period, the pattern of electrons lost or gained is A) 12345678 B) 01234321 C) 12343210

C) 12343210

Compared to the mass of a hydrogen atom, the mass of an oxygen atom is A) appreciably more than 16 times greater B) 12 times greater C) 16 times greater D) 8 times greater

C) 16 times greater

how many electrons are unpaired in the outermost shell of aluminum (Al, atomic number 13) A) 2 B) 3 C) 5 D) 8

C) 5

If one neutron is added to a helium nucleus, the result is A) hydrogen. B) boron. C) lithium. D) beryllium. E) helium.

E) helium

the weight of matter comes mostly from its A) electrons B) protons

protons

how many electrons are in the outermost shell of strontium (Sr, atomic number 38) A) 2 B) 4 C) 8 D) 38

A) 2

which of these atoms has the most mass A) uranium B) hydrogen C) lead D) iron

A) Uranium

the volume of matter comes mostly from its A) electrons B) protons

A) electrons

what is it that electrons have that protons always have in equal magnitude A) energy B) mass C) charge D) all of these E) none of these

C) charge

Metalloids consist of about eight elements and A) share properties of both metals and nonmetals B) may be shiny or dull C) conduct heat and electricity better than nonmetals, not as good as metals D) all of the above

D) all of the above

the property shared by elements in family 1A that best describes its characteristics is A) easy compressibility B) inactivity C) poor conductivity D) extreme reactivity

D) extreme reactivity

the elements that do not seem to fit into any of the eight families are called A) nonmetals B) metalloids C) noble gas D) transition metals

D) transition metals

If an atom has 43 electrons, 56 neutrons, and 43 protons, what is its approximate atomic mass? What is the name of this element?

Tc=98

Name of element [Rn] 5f3 6d1 7s2

U

about how old are the atoms that make up the body of a typical 16 year old student

as old as the universe

Solid matter is mostly empty space. The reason solids don't fall through one another is because A) of nuclear forces B) of gravitational forces C) of electrical forces D) atoms are constantly vibrating, even at absolute zero

electrical forces

What makes an element distinct? A) number of electrons B) the number of neutrons C) number of protons D) total mass of all the particles

number of protons