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40 Chem 1 final DL

Last updated over 4 years ago
45 questions
Elements, compounds and mixtures
1

Approximately how many elements exist in nature?

1

Which of the following is classified as an element?

1

Which of the following would NOT be classified as a mixture?

Atomic structure and electron configuration
1

What is the mass of a 25Mg atom?

1

Isotopes of the same element have different:

1

What is the electron configuration of potassium?

1

What is the shape of a 3p atomic orbital?

1

How many neutrons are there in a 13C atom?

1

Two atoms with the same number of protons but a different number of neutrons are called:

1

How many protons are there in a 13C atom?

1

As a consequence of the discovery by Rutherford, which model of the atoms is now believed to be true?

1

Which electron configuration is correct for S2-?

1

How many valence electrons are there in a silicon atom?

1

How many electrons are there in a Cl- ion?

Periodic Trends and Periodic Table
1

Which of the following elements has properties the most similiar to calcium?

1

As you move from left to right across the second period of the periodic table:

1

Which of the following element had the smallest atomic radius?

1

Electronegativity:

1

Which of the following element is in the halogen group?

Bonding, naming and chemical equations
1

In the chemical reaction in which carbon, hydrogen, and oxygen absorb heat and combine to form carbon dioxide and water, which of the following is considered to be a reactant?

1

Which of the following is true for all chemical reactions?

1

What is NOT true about ionic bonds?

1

Which substance is most likely ionic?

1

What is the charge on the strontium ion?

1

What is happening to the electrons in a covalent bond between two atoms?

The next section is naming formulas and determining the correct formula for the name. Use the flowcharts and your common ion list to do this.
1

Select the correct name for: SiO2

1

Select the correct name for: NaI

1

Select the correct name for: N2O5

1

Select the correct name for: Ca(NO3)2

1

Choose the formula for: sulfur hexafluoride

1

Choose the formula for: arsenic pentachloride

1

Choose the formula for: iron(II) chloride

1

Choose the formula for: magnesium sulfite

Questions 45 and 46 refer to the following equation:
__ Pb + __PbO2 + __H2SO4 --> __PbSO4 + __ H2O + energy
1

Which of the following coefficient sets matches with a balanced equation?

1

Balance this baby! Which of the following coefficient sets matches with a balance equation?
__Al + __ Pb(NO3)2 --> __Al(NO3)3 + __Pb

The mole, molar mass and conversions
1

What is the molar mass of CO2?

1

The number of seconds in an 8 hr school day can be calculated as:

1

What is the molar mass of CF4?

1

What is the mass of 1 mole of (NH4)2SO4?

1

How many liters are there in 5.3 moles of SO2 gas?

1

What is the mass of 3.50 x 1023 CF4 molecules?

Questions 57 - 59 refer to the following equation:
2CH3OH + 3O2 --> 2CO2 + 4H2O
1

How many moles of O2 are required to react with 5 moles of CH3OH?

1

If 4.3 g of CH3OH reacts, how many grams of CO2 will be formed?

1

If 4.3 g of CH3OH reacts, how many moles of water will be formed?

1

What is avogadro’s number?