Polyatomic Ions and Metal Ions Quiz

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Questions and Answers

What is the charge of the bicarbonate ion?

-2

-3

-1 (correct)

Which of the following ions has a charge of -3?

Phosphate (correct)

Nitrate

Sulfate

Hydroxide

Which metal ion can have a +2 or +4 oxidation state?

Lead (correct)

Iron

Copper

Zinc

What is the charge of the sulfate ion?

-2 Signup and view all the answers

Which of the following correctly describes the copper ion?

Cu1+ or Cu2+ Signup and view all the answers

Which option below is an acid commonly found in the home?

Citric acid Signup and view all the answers

The chemical symbol that represents an atom with 19 protons is?

K Signup and view all the answers

A banksia plant has seed pods that are activated for germination by chemical and heat signals from combustion. This is an adaptation to?

Bushfire Signup and view all the answers

What are the products of a reaction between an acid and a metal?

Hydrogen gas and metal salt Signup and view all the answers

Which of the following diagrams best models a mixture?

Diagram 2 Signup and view all the answers

In an electric circuit diagram, what does this symbol represent?

Power source Signup and view all the answers

Below is a food chain. The snake is described as a?

Secondary consumer Signup and view all the answers

What is the word equation that represents photosynthesis?

Water + carbon dioxide → oxygen + glucose Signup and view all the answers

What is the primary reason farmers set traps?

To catch foxes Signup and view all the answers

Which organism is NOT mentioned as being trapped by farmers?

Grasshoppers Signup and view all the answers

What type of competition is demonstrated by owls and foxes?

Interspecific competition Signup and view all the answers

Which of the following best describes mutualism?

Both organisms benefit Signup and view all the answers

Which of these is an example of herbivory?

Rabbits grazing on grass Signup and view all the answers

What role do grasshoppers play in the described food web?

Prey of small birds Signup and view all the answers

Why are owls considered a protected species?

Their population is declining Signup and view all the answers

What is an outcome of the symbiotic relationships described in the paragraph?

Reduction of invasive species Signup and view all the answers

Which scientist is associated with the Plum Pudding Model?

J.J. Thomson Signup and view all the answers

What is the correct chemical formula for Sodium Fluoride?

NaF Signup and view all the answers

What is the scientific name for Calcium Oxide?

CaO Signup and view all the answers

What key feature characterizes the Plum Pudding Model?

Electrons embedded in a positive sphere Signup and view all the answers

Which of the following compounds is represented by the formula MgCl2?

Magnesium Chloride Signup and view all the answers

In Outskirtsville, which animals are primarily attracted by the presence of mice and rabbits?

Foxes and owls Signup and view all the answers

What challenge do farmers in Outskirtsville face?

Overrun with pests Signup and view all the answers

What negative impact do invasive grasses have on crops in Outskirtsville?

They inhibit crop growth Signup and view all the answers

Which of the following best describes the relationship between pests and their predators in Outskirtsville?

Pests attract their natural predators Signup and view all the answers

What is the chemical formula for Lithium Sulfide?

Li2S Signup and view all the answers

What is the pH range typically associated with acids?

Below 7 Signup and view all the answers

What is the main product of the neutralisation reaction between sulfuric acid and potassium hydroxide?

Potassium sulfate Signup and view all the answers

Which characteristic is typical of a base?

Bitter taste Signup and view all the answers

What type of substance is calcium carbonate in the reaction with hydrochloric acid?

A base Signup and view all the answers

What is the expected behavior of hydrochloric acid when mixed with calcium carbonate?

Production of gas Signup and view all the answers

Which of the following best describes a neutralisation reaction?

A base reacting with an acid, forming water and a salt Signup and view all the answers

Which of the following indicates that a substance is likely caustic?

It has a high pH Signup and view all the answers

In the context of taste, how do acids typically differ from bases?

Acids taste sour, bases taste bitter Signup and view all the answers

Study Notes

Polyatomic Ions and Valencies

Polyatomic ions: Groups of atoms that act as a single unit with a charge.
Polyatomic Ions with a -1 Charge:
- Bicarbonate (or hydrogen carbonate): HCO3-
- Hydroxide: OH-
- Nitrate: NO3-
Polyatomic Ions with a -2 Charge:
- Sulfate: SO42-
- Carbonate: CO32-
Polyatomic Ions with a -3 Charge:
- Phosphate: PO43-

Metal Ions

Iron: Fe2+ or Fe 3+
Copper: Cu1+ or Cu2+
Lead: Pb2+ or Pb4+
Zinc: Zn2+
Tin: Sn2+ or Sn4+

Science Assessment Task Reflection Sheet

Provides a framework for students to reflect on their learning journey.
Covers areas such as:
- Class work participation and effort
- Personal study strategies and effort
- Exam performance
- Future planning and improvement strategies
- A section for written comments and reflections, allowing students to summarize key learning points
- Utilizes a scale for students to rate their learning in each area

Questions

Question 1: Commonly found acid in the home - Citric acid (C)
Question 2: Chemical symbol for an atom with 19 protons - Potassium (A)
Question 3: Banksia plant's seed pod adaptation - Bushfire (C)
Question 4: Products of a reaction between an acid and a metal - Hydrogen gas and metal salt (B)
Question 5: Diagram representing a mixture - (Diagram with different parts mixed together)
Question 6: Circuit diagram - Switch, a lamp and a battery (D)
Question 7: Snake's role in a food chain - Tertiary consumer (B)
Question 8: Word equation for photosynthesis - Carbon dioxide + water  oxygen + glucose (A)
Question 9: Symbol representing an ammeter in an electric circuit diagram - Ammeter (B)
Question 10: Kelp forest and sewage data - Kelp forests are lower in Sydney, because sewerage discharge is high (C)
Question 11: Non-metal element - Carbon (C)
Question 12: Thompson's Plum Pudding Model
- Thompson developed the Plum Pudding Model.
- Negatively charged electrons (plum pieces) embedded in a positively charged sphere (pudding).
Question 12 (c) Chemical Formulas
- Sodium fluoride: NaF
- Magnesium chloride: MgCl2
Question 12 (d) Scientific Names
- CaO: Calcium oxide
- Li2S: Lithium sulfide

Outskirtsville Food Web

A food web is provided, showing the relationships between organisms in Outskirtsville.
Arrows are used to show the direction of energy flow (from prey to predator).
Relationships include:
- Farmers growing crops.
- Invasive grasses, mice, and rabbits as pests that eat the crops.
- Owls and foxes as predators of mice and rabbits.
- Foxes also eat owls, resulting in farmers trapping foxes.
- Birds eating insects that eat invasive grasses and grains.

Symbiotic Interactions in Outskirtsville

Herbivory:
- Rabbits eating carrots and grains is an example of herbivory.
Interspecific Competition:
- Owls and foxes compete for the same resource (rabbits).
Mutualism (Example outside of the diagram):
- Definition: A relationship where both organisms benefit.
- Example: A bee pollinating a flower, the bee gets nectar, and the flower gets pollinated.

Acids and Bases

Comparison of Acids and Bases:
- Taste: Acids are sour, bases are bitter.
- pH: Acids have a pH below 7, bases have a pH above 7.
- Damage: Acids are corrosive, bases are caustic.
Neutralisation Reaction:
- A reaction between an acid and a base that produces salt and water.
- Chemical word equation for sulfuric acid and potassium hydroxide: Sulfuric acid + potassium hydroxide  Potassium sulfate + Water

Working Scientifically: Measuring Gas Volume

An experiment was conducted to measure the volume of gas produced during a chemical reaction.
Materials:
- Calcium carbonate (30g)
- Hydrochloric acid (various volumes)
Procedure:
- Calcium carbonate was reacted with different volumes of hydrochloric acid.
- The volume of gas produced was measured.
Result:
- Results are presented in a table (specific data needed for analysis)
Key Observations:
- The volume of gas produced increases as the volume of hydrochloric acid is increased.

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Description

Test your knowledge on polyatomic ions and their charges, as well as various metal ions and their respective valencies. This quiz also includes a reflection section to encourage students to evaluate their learning progress and strategies for improvement. Perfect for science assessments and understanding chemical compounds.