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Exam Practice Chemistry > Chapter 2 > Flashcards

Chapter 2 Flashcards

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1
Q

In a chemical reaction, matter is neither created nor destroyed. Which law does this refer to?

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2
Q

Identify the equipment that Thomson utilized to do his research.

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3
Q

The mass number is equal to

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4
Q

Determine the number of protons, neutrons, and electrons in the following:
25
X
12

A
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5
Q

What species is represented by the following information?
p+ = 47 n° = 62 e- = 46

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6
Q

Which of the following does NOT describe a nonmetal?

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7
Q

The atomic mass for cadmium is

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8
Q

Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu) is 48.16%. What is the amu of the other isotope?

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9
Q

Identify the discovery that Millikan made

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10
Q

How many electrons does the Br- ion possess?

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11
Q

How many electrons does the N3- ion possess?

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12
Q

How many electrons does the P3- ion possess?

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13
Q

How many electrons does the Al3+ ion possess?

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14
Q

Predict the charge of the most stable ion of sodium

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15
Q

Which of the following elements is a halogen?

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16
Q

Which of the following elements is a nonmetal?

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17
Q

Which of the following elements is an alkaline earth metal?

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18
Q

Which of the following elements is a transition metal?

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19
Q

Sodium belongs to the ________ group of the periodic table

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20
Q

Which of the following elements is a good conductor of heat and electricity?

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21
Q

Which one of the following elements is a poor conductor of heat and electricity?

A
22
Q

All of the following elements are nonmetals EXCEPT

A
23
Q

Predict the charge of the most stable ion of potassium

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24
Q

Which of the following elements is a halogen?

A
25
Q

Which of the following elements is a nonmetal?

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26
Q

Which of the following elements is an alkaline earth metal?

A
27
Q

Which of the following elements is a transition metal?

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28
Q

Sodium belongs to the ________ group of the periodic table

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29
Q

Predict the charge of the most stable ion of rubidium

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30
Q

Which of the following elements is a halogen?

A
31
Q

Which of the following elements is a nonmetal?

A
32
Q

Predict the charge of the most stable ion of sodium

A
33
Q

Identify the discovery that Thomson made

A
34
Q

Identify the charges of the protons, neutrons, and electrons

A
35
Q

An atom of 13C contains ________ protons

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36
Q

How many electrons are in each neutral atom of magnesium?

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37
Q

Isotopes differ in the number of

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38
Q

Identify a cation

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39
Q

Identify an anion

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40
Q

How many electrons does the Se2- ion possess?

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41
Q

Calculate the atomic mass of element “X”, if it has 2 naturally occurring isotopes with the following masses and natural abundances

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42
Q

What mass (in mg) does 2.63 moles of nickel have?

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43
Q

How many iron atoms are contained in 354 g of iron?

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44
Q

Calculate the atomic mass of gallium if gallium has 2 naturally occurring isotopes with the
following masses and natural abundances

A
45
Q

Semiconductors are

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46
Q

Identify the equipment that Millikan utilized to do his research

A
47
Q

Identify the description of an atom

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48
Q

Identify the largest subatomic particle

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49
Q

Identify the smallest subatomic particle

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50
Q

All samples of a given compound, regardless of their source or how they were prepared, have the same proportions of their constituent elements. Which law does this refer to?

A
51
Q

When two elements form two different compounds, the masses of element B that combine with 1 g of element A can be expressed as a ratio of small whole numbers. Which law does this refer to?

A
52
Q

Which of the following is an example of the law of multiple proportions?

A

Exam Practice Chemistry (2 decks)

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