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Kelso High Chem 1 Credit redemption

Last updated over 5 years ago

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These next two are analogies. Look for the relationship between the two terms given and extend that to the next term, choosing the term that best fits the same relationship.

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Question 26

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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. 

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Question 37

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

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Question 39

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Question 44

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Question 45

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Question 46

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Question 47

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Question 48

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

Question 49

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Question 50

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Question 51

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Question 52

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Approximately how many elements exist in nature?

100

10,000

1,000

30

Which of the following is classified as an element?

gold

water

cereal

all of the above

none of the above

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?

heat

oxygen

water

carbon dioxide

Which of the following is true for all chemical reactions?

The total mass of the reactants increases

Water is given off

The total mass of the reactants equals the total mass of the products

The total mass of the products is greater than the total mass of the reactants

The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?

1.54 x 10-12m

1.54 x 1012m

1.54 x 10-10m

1.54 x 1010m

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

8 hr X 60 min X  60 s
             1 hr       1 min

8 hr X 60 min X 60 s
              8 hr     60 min

60 s X 1 min  X 1 hr
             60 s    60 min

1 s X 1 min X 8 hr
           60 s    60 min

Which answer correctly identifies the number of protons, neutrons and electrons in the following atom - 120Sn

120 protons, 50 electrons, and 70 neutrons

70 protons, 70 electrons, and 50 neutrons

50 protons, 50 electrons, and 70 neutrons

70 protons, 50 electrons, and 50 neutrons

Isotopes of the same element have different:

chemical behavior

atomic masses

positions on the periodic table

atomic numbers

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

yttrium

rubidium

germanium

strontium

What is the shape of a 3p atomic orbital?

a sphere

a bar

two perpendicular dumbbells

a dumbbell

What is the electron configuration of potassium?

1s22s22p103s23p3

1s22s23s23p63d1

1s22s22p23s23p24s1

1s22s22p63s23p64s1

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

A model in which the protons, electrons, and neutrons are evenly distributed throughout the volume of the atom

A model in which the nucleus is made of protons, electrons, and neutrons

A model in which the nucleus is made of neutrons only

A model in which the region outside the nucleus is largely empty space in which the electrons are located

Which electron configuration is correct for S2-?

1s22s22p63s23p4

1s22s22p63s23p2

1s22s22p63s23p6

1s22s22p6

Which of the following element is in the halogen group?

none of these

potassium

calcium

copper

Which of the following element had the smallest atomic radius?

selenium

chlorine

sulfur

phosporus

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

the atomic radii increases

the atomic mass decreases

the ionization energy increases

the electron affinity decreases

Electronegativity:

Is generally higher for metals than for nonmetals

Generally increases as you move down a group

Is the electrical attraction of a negative ion to another negative ion

Generally increases from left to right across a period

How many valence electrons are there in a silicon atom?

8

2

4

6

What is NOT true about ionic bonds?

They are formed between metals and nonmetals

Held together by opposite charges

Formed by the transfer of an electron

Poor conductors when dissolved

Which substance is most likely ionic?

CO2

O2

H2O

BF3

CaS

What is the charge on the strontium ion?

2-

2+

1+

0

1-

Pipe : water
Metal: _______

conductor

electricity

ionic bond

ions

House: lumber
Bond : __________

molecules

atoms

valence electrons

octet rule

The melting temperature of potassium chloride is relatively __________.

low

high

potassium chloride does not melt.

variable

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

They become excited to a higher energy level

They release light

They are shared.

They are transferred

Which of the following molecules contain at least one double bond?

CO2

H2O

CH4

NH3

Select the correct name for: SiO2

calcium dinitrate

calcium nitrogen trioxide

silver dioxide

silicon dioxide

boron triple fluoride

nitrogen monoxide

calcium nitrate

sodium iodide

dinitrogen pentoxide

boron trifluoride

Select the correct name for: BF3

silicon dioxide

nitrogen monoxide

sodium iodide

boron trifluoride

calcium nitrogen trioxide

boron triple fluoride

calcium nitrate

silver dioxide

dinitrogen pentoxide

calcium dinitrate

Select the correct name for: NaI

silver dioxide

nitrogen monoxide

boron trifluoride

sodium iodide

calcium nitrate

calcium dinitrate

calcium nitrogen trioxide

boron triple fluoride

silicon dioxide

dinitrogen pentoxide

Select the correct name for: N2O5

calcium nitrate

silicon dioxide

calcium nitrogen trioxide

boron trifluoride

boron triple fluoride

dinitrogen pentoxide

calcium dinitrate

silver dioxide

nitrogen monoxide

sodium iodide

Select the correct name for: Ca(NO3)2

calcium nitrogen trioxide

boron trifluoride

calcium dinitrate

dinitrogen pentoxide

silver dioxide

sodium iodide

boron triple fluoride

silicon dioxide

nitrogen monoxide

calcium nitrate

Choose the formula for: sulfur hexafluoride

I3Br

FeCl2

P4O7

MgS

Fe2Cl

P4O6

SF6

AsCl5

MgSO3

IBr3

Choose the formula for: iodine tribromide

MgSO3

P4O6

MgS

IBr3

Fe2Cl

AsCl5

SF6

P4O7

I3Br

FeCl2

Choose the formula for: arsenic pentachloride

I3Br

P4O6

P4O7

MgS

SF6

AsCl5

IBr3

FeCl2

MgSO3

Fe2Cl

Choose the formula for: iron(II) chloride

AsCl5

SF6

P4O7

I3Br

IBr3

P4O6

MgS

MgSO3

FeCl2

Fe2Cl

Choose the formula for: magnesium sulfite

MgSO3

AsCl5

P4O7

P4O6

IBr3

FeCl2

MgS

Fe2Cl

SF6

I3Br

Choose the formula for: tetraphosphorus hexaoxide

IBr3

MgS

P4O6

I3Br

P4O7

AsCl5

MgSO3

SF6

Fe2Cl

FeCl2

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

1, 1, 2 --> 2, 2

1, 2, 3 --> 2, 1

2, 2, 1 --> 1, 2

2, 2, 4 --> 4, 4

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

2, 3 --> 2, 3

3, 2 --> 3, 2

2, 1 --> 1, 2

1, 1 --> 1, 1

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

Beta particles

Ions

Isotopes

Alpha particles

Neutral

How many protons are there in a 13C atom?

8

13

12

6

7

How many neutrons are there in a 13C atom?

6

7

12

13

8

What is the mass of a 25Mg atom?

25

26

14

13

12

How many electrons are there in a 35Cl- atom?

35

17

16

36

18

What is the molar mass of CO2?

none of the these

44 g/mol

40 g/mol

56 g/mol

28 g/mol

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

210.2 g/mol

118.1 g/mol

150.1 g/mol

114.1 g/mol

132.1 g/mol

How many molecules are there in 5.3 moles of H2O?

3.2 x 1024 molecules

95.4 molecules

8.8 x 10-24 molecules

0.29 molecules

What is the mass of 3.5 x 1023 CF4 molecules?

151 g

88 g

51.1 g

3.08 x 1025 g

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

6.7 moles

3.3 moles

7.5 moles

5 moles

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

11.8 g

5.9 g

6.5 g

8.9 g

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

0.26 moles

4.3 moles

5 moles

0.13 moles

What is avogadro’s number?

6.02 x1023

3 x108

3.1415

22.4

6.63 x10-34