Chemistry 1E Final Exam Review

Nature of Science

100

Which of the following is qualitative data?

1. Color

2. Temperature

3. Pressure

4. Volume

color

200

Which of the following is quantitative data?

1. Color    

2. Odor

3. Shape

4. Volume

volume

300

According to rounding rules for addition, the sum of 27.1, 34.538, and 37.68 is ____.

99.3

400

When determining the number of significant digits in a measurement,

1. All zeros are significant

2. All nonzeros are significant

3. All zeros between two nonzero digits are not significant

4. All nonzeros are not significant

all nonzeros are significant

500

in general, which state of matter is the most dense?

solid

Properties of Matter

100

Matter that has a uniform and unchanging composition is known as a(n) ____.

1. mixture

2. element

3. Substance

4. Heterogeneous mixture

element

200

The law of conservation of mass states that during a chemical reaction, total mass is ____

conserved- the same before and after a chemical reaction

300

Which of the following substances is a mixture?

1. Salt

2. Sugar

3. Baking soda

4. Gasoline

gasoline

400

A chemical composition of two or more different elements joined together in fixed proportions is known as a(n) ____.

compound

500

Density is an extensive property of matter, meaning it changes depending on how much substance you have. True or False

False

Structure of the Atom

100

A proton is a subatomic particle carrying a charge equal to but opposite that of an electron. True or False

True

200

An industrially important element contains 26 electrons and rusts in the presence of air and moisture. Identify the element.

iron

300

What caused the deflection of the alpha particles in Rutherford’s gold foil experiment?

the positive nucleus

400

Which subatomic particles account for most all of the atom's mass?

protons and neutrons

500

During gamma decay, the atomic number of the daughter nuclei ____________, and the mass number____________.

stays the same; stays the same

Electrons in Atoms

100

During a flame test, a lithium salt produces a characteristic red flame. This red color is produced when electrons in excited lithium atoms

1. are lost by the atoms. 

2. are gained by the atoms. 

3. return to lower energy states within the atoms. 

4. move to higher energy states within the atoms.

3. 

200

The quantum-mechanical model of the atom

1. describes an electron probability distribution that determines the most likely location of an electron. 

2. is the currently accepted atomic model. 

3. makes predictions based on Schrodinger’s wave equation. 

4. All of the above

all of the above

300

In the quantum-mechanical model of the atom, an orbital is defined as a

1. region of the most probable proton location. 

2. region of the most probable electron location. 

3. circular path traveled by an electron around an orbital. 

4. circular path traveled by a proton around an orbital.

2

400

At a maximum, an f-orbital can hold_____ electrons, a d-orbital can hold_____ electrons and a p-orbital can hold ________ electrons.

14; 10; 6

500

The ______ orbital is partially filled in the Manganese atom. 

3d

RANDOM

100

 If two objects have the same volume but one has a greater mass, the one with greater mass..

will have a higher density

200

Using proper significant figure rules, solve (8.1 x 10²) / (6.0 x  10²)

1.4 x 10⁴

300

A single atom of any given element..

1. Can be divided into smaller particles that retain all the properties of that element.

2. Cannot be divided into smaller particles that retain all the properties of that element.

3. Does not possess all the properties of a larger quantity of that element.

4. Cannot be seen using current technology

2

400

Which of the following is not an intensive property?

1. Density

2. Boiling point

3. Volume 

4. Melting point

volume

500

The emission of photons from the surface of a metal depends on the frequency of incident light, not on the intensity of light. true or false

True