Honors Chemistry Midterm

A molecule of F, 2 shared electrons give each atom how many electrons in the outermost lev.

Visible light, X rays, inferred radiation, and radio waves all have the same

What is the oxidation number if oxygen in most compounds?

Chlorine has atomic number 17 and mass number 35. It has

Which of the following is an example of a heterogeneous mixture

Most of the volume of an atom is occupied by the

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

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

How is the measurement 0.000065 cm written in scientific notation?

To draw. Lewis Structure, one must know the

Name the compound Fe(NO3)2

Elements to the right side of the p.t. (p-block elements) have properties most associated with

A prospector has 39.39g of pure gold (atomic mass 196.9665 amu.) she has

The 1st member of the noble gases, whose highest energy lev. has an octet of electrons is

electrical current passed though glass tube cause the surface across from the cathode to glow..

The number of orientations for the d sublevel is

A neutral group of atoms held together by covalent bond is a

The symbols for units of length in order from largest to smallest are

The density of pure diamond is 3.5 g/cm ^3

All isotopes of hydrogen contain

As it travels through space, electromagnetic radiation

3 samples of 1.12g, 18.8g, and 1.562g are mixed together.What would the mass be with sig fig

Noble gases are in Group 18, and are best known because they are

Within the p-block elements, the elements the top of the able,compared with those at the bottom

How many extra electrons are in the Lewis structure of the phosphate ion, PO4^3-

A nonmetal is usually

In Period 3 there are 8 elements. What sub level(s) is (are) being filled?

The electron notation for aluminum (atomic number) is

0.25 g is equivalent to

The Bohr model of the atom was an attempt to explain hydrogen's

Organic chemistry is the study of

A theory is accepted as the explanation of an observed phenomenon until

Which of the following is an extensive property of matter?

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

A homogeneous mixture is also called

The measurement 0.035550 g rounded off to two sig figs would be

A compound is

The element with electron configuration 1s^2 2s^2 2p^6 3s^2 3p^2 is

A volume of 1 millimeter is equivalent to

Bromine atomic # 35, (group 17) .How many electrons does Br have its outermost energy level?

The region outside the nucleus where an electron can most probably be found is the

A sample of tin (atomic mass 118.71 amu) contains 3.01 x 10^23 atoms. The mass of the sample is

The periodic law allows some properties of an element to be predicted base on its

An atom is

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

Which of the following observations is quantitative?

Dalton incorporated the law of conservation of mass into his atomic theory by asserting that

Name the compound N2O3

Protons within a nucleus are attracted to each other by

Dimensions of a rectangular solid are measured to be 1.27cm,1.3cm,2.5cm. The volume should be

Use VESPR theory to predict the shape of the carbon tetraIODIDE molecule, CI4

VSEPR theory is a model for predicting

the mass of products when a chem. reac. was carried out 3separate times8:83g; 8:84g;8.82g mass=

The density of aluminum is 2.70g/cm^3

A chemical change occurs when

In Rutherford's experience, most of the particles

Technological development often occurs

Argon, krypton, and xenon are

The number of atoms in 1 mol of carbon is

Dalton's atomic theory agrees with modern atomic theory except for the statement that

What is the formula mass of magnesium chloride, MgCl2?

Basic research is usually performed

Which of these measurements has only nonsignificant zeros?

Use VESPR theory to predict the shape of carbon dioxide, CO2

Avogadro's number is

Isotopes are atoms of the same element that have different

What is the formula for aluminum sulfate?

The most reactive group of the nonmetals is the

Accord.to the Bohr model of the atom,the single electron of a hydrogen atom circles the nucleus

Mendeleev predicted that the spaces in his periodic table represented

What happens to the energy in a substance when it changes state?

The average atomic mass of an element is the average of the atomic masses of its

N's econfig is 1s^2 2s^2 2p^3. How many more electrons does N need to satisfy the octet rule.

What is the percentage composition of CO?

Groups 13 through 18,the total # of electrons in the highest occupied level equals the group #

A 3-d region around a nucleus where an electron may be found is called a(n)

If repeated measurements agree closely but differ widely from the accepted value, the mes. are

over time it is indicated that a better arrangement than atomic mass for elements inthe p.t. is

How many electrons are needed to completely fill the fourth energy level?

The major difference between a 1s orbital and a 2s orbital is that

The horizontal rows on the periodic table are called

Which of the following is not a chemical change?

If electromagnetic radiationA has a lower frequency than erB,compared to B,the wavelength of A