C1 Atoms, ions and rates - End of unit exam - Daniel Alexander | Biblioteka

1

What does the atomic number of an atom represent?

1

What does the mass number of an atom represent?

6

Match the descriptions to the sub atomic particles. Some may be used more than once.

Found in Nucleus
Found outside nucleus
Negatively charged -1
Positively charged +1
No charge
Relative Mass of 1
Negligible mass

Proton
Neutron
Electron

2

Give a definition of isotope

1

Describe how the electron configuration of an atom changes when it becomes an ion.

1

Given that Silver contains 52% of Ag-107 with a mass of 107 amu and 48% of Ag-109 with a mass of 109 amu, calculate the relative atomic mass.

1

The naturally occurring copper consists of Cu-63 (69% abundance and mass of 63) and Cu-65 (31% abundance and mass of 65 amu). Calculate the relative atomic mass.

1

When forming ions metals normally form...

Cations

Anions

They don't form ions

1

When forming ions non-metals normally form...

Cations

Anions

They don't form ions

1

What is necessary for a collision to lead to a chemical reaction based on the collision theory?

Just a collision

Damage to the reacting particle

Lots of energy

A collision with sufficient energy

1

In an experiment studying reaction rates, temperature is increased. What is the role of temperature in this experiment?

It is the independent variable.

It is the control variable.

It is the dependent variable.

It is the extraneous variable.

1

In a study about the effect of temperature on the solubility of sodium chloride, what role does the amount of dissolved sodium chloride play?

It is a constant variable.

It is the dependent variable.

It is an extraneous variable.

It is the independent variable.

3

Draw the electron configuration of an nitrogen ion

2

Draw the electron configuration of a lithium atom

3

Draw the electron configuration of an aluminium ion

2

Describe the meaning of activation energy

1

What happens when particles collide with less than activation energy?

5

1

What is the charge of an ion with 10 protons and 7 electrons?

0

+7

+3

-3

1

What is the atomic mass of an atom with 12 protons, 13 neutrons and 11 electrons?

25

12

36

22

1

What happens to the number of atoms in a chemical reaction?

They are conserved/it doesn't change

They decrease

They change depending on temperature

They increase

1

Which factor increases the rate of a chemical reaction?

Decreasing the temperature

Increasing the concentration of reactants

Decreasing the surface area of solid reactants

Reducing the pressure

2

Explain why increasing surface area of a solid reactant increases the rate of a reaction

2

Explain why atoms have no overall charge

4

Explain the effect of increasing temperature on the rate of a reaction

1

Which of the following will not increase the rate of reaction?

Decreasing pressure in gaseous reactions

Increasing surface area

Increasing temperature

Using a catalyst

1

1. A reaction produces 120g of water in 15 minutes. What is the rate of reaction?

1

2. If 200g of hydrogen reacts in 60 minutes, what is the average rate of reaction?

2

C1 Atoms, ions and rates - End of unit exam

C1 Atoms, ions and rates - End of unit exam

What does the atomic number of an atom represent?

What does the mass number of an atom represent?

Match the descriptions to the sub atomic particles. Some may be used more than once.

Give a definition of isotope

Describe how the electron configuration of an atom changes when it becomes an ion.

Given that Silver contains 52% of Ag-107 with a mass of 107 amu and 48% of Ag-109 with a mass of 109 amu, calculate the relative atomic mass.

The naturally occurring copper consists of Cu-63 (69% abundance and mass of 63) and Cu-65 (31% abundance and mass of 65 amu). Calculate the relative atomic mass.

When forming ions metals normally form...

When forming ions non-metals normally form...

What is necessary for a collision to lead to a chemical reaction based on the collision theory?

In an experiment studying reaction rates, temperature is increased. What is the role of temperature in this experiment?

In a study about the effect of temperature on the solubility of sodium chloride, what role does the amount of dissolved sodium chloride play?

Draw the electron configuration of an nitrogen ion

Draw the electron configuration of a lithium atom

Draw the electron configuration of an aluminium ion

Describe the meaning of activation energy

What happens when particles collide with less than activation energy?

What is the charge of an ion with 10 protons and 7 electrons?

What is the atomic mass of an atom with 12 protons, 13 neutrons and 11 electrons?

What happens to the number of atoms in a chemical reaction?

Which factor increases the rate of a chemical reaction?

Explain why increasing surface area of a solid reactant increases the rate of a reaction

Explain why atoms have no overall charge

Explain the effect of increasing temperature on the rate of a reaction

Which of the following will not increase the rate of reaction?

1. A reaction produces 120g of water in 15 minutes. What is the rate of reaction?

2. If 200g of hydrogen reacts in 60 minutes, what is the average rate of reaction?

Describe the effect of increasing the concentration of a solution on rate of reaction

What does the atomic number of an atom represent?

What does the mass number of an atom represent?

Match the descriptions to the sub atomic particles. Some may be used more than once.

Give a definition of isotope

Describe how the electron configuration of an atom changes when it becomes an ion.

Given that Silver contains 52% of Ag-107 with a mass of 107 amu and 48% of Ag-109 with a mass of 109 amu, calculate the relative atomic mass.

The naturally occurring copper consists of Cu-63 (69% abundance and mass of 63) and Cu-65 (31% abundance and mass of 65 amu). Calculate the relative atomic mass.

When forming ions metals normally form...

When forming ions non-metals normally form...

What is necessary for a collision to lead to a chemical reaction based on the collision theory?

In an experiment studying reaction rates, temperature is increased. What is the role of temperature in this experiment?

In a study about the effect of temperature on the solubility of sodium chloride, what role does the amount of dissolved sodium chloride play?

Draw the electron configuration of an nitrogen ion

Draw the electron configuration of a lithium atom

Draw the electron configuration of an aluminium ion

Describe the meaning of activation energy

What happens when particles collide with less than activation energy?

What is the charge of an ion with 10 protons and 7 electrons?

What is the atomic mass of an atom with 12 protons, 13 neutrons and 11 electrons?

What happens to the number of atoms in a chemical reaction?

Which factor increases the rate of a chemical reaction?

Explain why increasing surface area of a solid reactant increases the rate of a reaction

Explain why atoms have no overall charge

Explain the effect of increasing temperature on the rate of a reaction

Which of the following will not increase the rate of reaction?

1. A reaction produces 120g of water in 15 minutes. What is the rate of reaction?

2. If 200g of hydrogen reacts in 60 minutes, what is the average rate of reaction?

Describe the effect of increasing the concentration of a solution on rate of reaction