If two covalently bonded atoms are identical (example H-H or F-F), the bond is

The electrons involved in the formation of a chemical bond are called

A chemical bond formed by the attraction between positive ions and a surrounding sea of delocalized electrons is a(n)

If a material can be shaped or extended by physical pressure, such as hammering, which property does the material have?

Which of the following compounds would be formed from an ionic bond?

What type of bond forms from the transfer of electrons?

Which of the following is an example of a molecular formula?

What is the correct Lewis structure for hydrogen chloride, HCl?

The following molecules all contain polar bonds; however, the only polar molecule is _______________. Hint: You need to draw Lewis structures to assist you.

According to the VSEPR theory, what is the molecular geometry (shape) of NH₃? Hint: Draw the Lewis structure

What type of hybrid orbitals does nitrogen form in the molecule NCl₃?

According to the VSEPR theory, what is the molecular geometry (shape) of a molecule of CF₄? Hint: Draw the Lewis structure.

According to the VSEPR theory, the molecular geometry (shape) of H₂O is? Hint: Draw the Lewis structure.

The Al-F bond in AlF₃ (electronegativity for Al is 1.61; electronegativity for F is 4.0) is

What is the strongest intermolecular force of attraction (IMF) present in NH₃ ? Hint: Draw the Lewis structure first.

What is the strongest intermolecular force of attraction (IMF) for the molecule NCl₃? Hint: Draw the Lewis structure first.

What is the strongest intermolecular force of attraction (IMF) for CF₄? Hint: Draw the Lewis structure first.

The smallest unit of an element that can exist either alone or in combination with other such particles of the same or different elements is the

Which of the following main-group elements would you expect to have the lowest first ionization energy?

What is the density of a block of marble that occupies 210. cm³ and has a mass of 853 g?

Compare the ionic radius of the typical ion formed by the element, 4s²3d¹⁰4p⁴, with the radius of the atom from which the ion was formed.

If testing shows an element is a poor conductor of electricity, it is probably a(n)

Elements that are good conductors of electricity are

Which of the following elements are located in the same period?

E: 2s² G: 4s²3d¹⁰4p¹ J: 3s²3p⁵ L: 4s^2. M: 4s²3d¹⁰4p⁵

What group of elements have similar properties to the lanthanides?

A(n) ____________ is an element that has some characteristics of metals and some characteristics of nonmetals and is a semiconductor.

A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)

In oxides of nitrogen, such as C₂O, CO, CO₂, and C₂O₃, atoms combine in small whole-number ratios. This evidence supports the law of

A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called

What is the correct noble gas notation for Indium, In?

A spherical electron cloud surrounding an atomic nucelus would represent

Moseley's work led to the realization that elements with similar properties occurred at regular intervals when ordered by

The Coulombic force of attraction between electrons and protons is _____ proportional to the distance and ______ proportional to the number of protons in the nucleus.

The atomic number of P, 15, indicates that there are 15

What is the product of 6.032 g and 0.00556 g with correct number of significant figures?

A mixture that has the same proportion of components throughout is considered to be

Which of the following elements are located in the same group?

E: 2s² G: 5s²4d¹⁰5p¹ J: 3s²3p⁵ L: 4s^2. M: 4s²4d¹⁰4p⁵

Chemistry is a natural science that deals with the study of

An atom is electrically neutral because

Which ion could not be represented by the noble gas configuration [Kr]5s²4d¹⁰5p⁶?

A spherical electron cloud surrounding an atomic nucleus would represent

Moseley's work led to the realization that elements with similar properties occurred at regular intervals when ordered by

The number of atoms (or represented particles) in a mole of any pure substance is called

The emission of electrons from metals that have absorbed photons is called the

A line emission spectrum is produced when an electron moves from one energy level

Which of these is an example of an element?

If some measurements agree closely with each other but differ widely from the actual value, these measurements are

Which of the following is not part of Dalton's atomic theory?

Which of the following elements would be expected to have 7 valence electrons?

E: 2s² G: 4s²3d¹⁰4p¹ J: 3s²3p⁵ L: 4s^2. M: 4s²3d¹⁰4p⁵

Which process is an example of a chemical change?

The most reactive group of the nonmetals is the

In which of the following measurements are all the zeros considered to be non-significant figures?

All atoms of the same element have the same

At sea level, water boils at 100^o C. This is an example of a(n)

Which is the correct noble gas notation for antimony, Sb?

Which of these is an example of an extensive physical property?

How many atoms are present in 2.5x 10^-5 g of sodium, Na?

The group of reactive metals, all of which have exactly two valence electrons in a s-orbital, is known as the

The most reactive group of metals on the periodic table are the

Calculate the number of moles present in 17.32 g of phosphorus, P

A three-dimensional region around a nucleus where an electron may be found is called a(n)

Sodium exploding in water is an example of a

According to the law of definite proportions, any two samples of potassium chloride, KCl have

A neutral atom of isotope Copper-65 has how many protons, electrons, and neutrons?

By making several measurements of a sample with the same balance, a chemist obtained values of 6.224 g, 6.5535 g, and 6.759 g for the mass of a sample. Without knowing the actual mass of the sample, we can tell that these measurements have

The mixture released a yellow vapor. This is an example of ________ data.

The group of elements that are mostly laboratory made and radioactive is called the

Which figure below would have the least Coulombic force of attraction?

Which of the following elements would you expect to have the highest electronegativity?

According to the law of conservation of mass, when sodium, hydrogen, and oxygen react to form a compound, the mass of the compound is _____ the sum of the masses of the individual elements

Which of these is an example of a heterogeneous mixture?

If isotopes of the same element have increasing mass numbers, the number of protons of those isotopes

The sample of metal weighs 12.0 g. This is a ____ measurement.

Most of the volume of an atom is occupied by the

How many atoms of Phosphorus react when there is 3.004 x 10^-5 moles of phosphorus in the matches?

An Silicon isotope consists of 14 protons, 14 electrons, and 14 neutrons. Its mass number is

The set of orbitals that are dumbbell shaped and directed along the x, y, and z axis are called

Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing

The nucleus of an atom has all of the following characteristics except that it

A unknown element has two naturally occurring isotopes. Isotope A is 38.40% with a mass of 190.955 amu and Isotope B is 61.60% with a mass of 194.956 amu. Calculate the average atomic mass of the unknown element with the correct number of significant figures.

The ability of iron to rust when exposed to oxygen is an example of a

Which figure below has the least Coulombic Force of attraction?

Which of the following is the correct configuration of gallium, Ga?

If electrons in an atom have the lowest possible energies, the atom is in the

Melting an ice cube is an example of a

The most characteristic property of the noble gases is that they

A positive ion is known as a(n)

Which of the following elements will form a 2+ ion?

The main energy levels of an atom are indicated by the

A blend of two or more kinds of matter each of which retains its own identity and properties, is a(n)

The energy required to remove an electron from an atom is called the

The state of matter in which a material has a definite volume and an indefinite shape is a

Which of the following elements has the smallest atomic radius?

A neutral atom of fluorine has atomic number 9 and mass number of 19. It has

When atoms of two or more elements are chemically bonded, the substance formed is a(n)

Calculate the mass of 2.05 x 10²⁵ atoms of silver, Ag.

What type of bond is present in chlorine gas, F₂?

The shiny appearance and malleability of a metal is most closely related to the metal's

What type of bond is formed when two or more atoms share electrons?

A solid that has a high melting point, is soluble in water, and a conductor in an aqueous solution is a(n)