States of Matter and Solutions Quiz

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Questions and Answers

Water freezes at ______ degrees Celsius.

Water boils at ______ degrees Celsius.

100

What is the name of the state of matter when water is frozen?

Solid

What is the name of the state of matter when water is a liquid?

Liquid Signup and view all the answers

What is the name of the state of matter when water is a gas?

Gas Signup and view all the answers

What is the name of the process when a solid changes into a liquid?

Melting Signup and view all the answers

What is the name of the process when a liquid changes into a gas?

Boiling Signup and view all the answers

How many grams of salt can dissolve in 100mL of water at room temperature?

36 Signup and view all the answers

Sugar is more soluble in water than salt.

True Signup and view all the answers

Match the following reactants and products to their chemical formulas:

Sodium Bicarbonate = NaHCO3 Hydrochloric Acid = HCl Sodium Chloride = NaCl Water = H2O Carbon Dioxide = CO2 Signup and view all the answers

How many products are formed in the reaction between hydrochloric acid and sodium bicarbonate?

4 Signup and view all the answers

Which of the following materials will float in water?

Wood Signup and view all the answers

What is the density of water?

1 g/cm³ Signup and view all the answers

Which of the following substances is acidic?

Vinegar Signup and view all the answers

Which of the following substances is basic?

Ammonia Solution Signup and view all the answers

Which of the following substances is neutral?

Pure Water Signup and view all the answers

What is the pH level of vinegar?

3 Signup and view all the answers

What is the latent heat of fusion for water?

334 J/g Signup and view all the answers

How much energy is required to melt 1kg of ice?

334000 Joules Signup and view all the answers

Study Notes

Clue 1: States of Matter

Water exists in three states: solid, liquid, and gas.
Solid (ice) - freezing point: 0°C
Liquid (water) - boiling point: 100°C
Gas (steam) - boiling point: 100°C
The temperature at which water boils is 100°C
Using this temperature, first code can be determined

Clue 2: Water as a Solvent (Solutions and Solubility)

Salt's solubility in water at room temperature (25°C): Specific value needed
Sugar's solubility in water at room temperature (25°C): Specific value needed
Finding the correct solubility values for salt and sugar (in grams/100 mL of water) is required.
The specific solubility values (in grams) will unlock the next code.

Clue 3: Chemical Reactions (Reactants and Products)

Hydrochloric acid (HCl) reacts with sodium bicarbonate (NaHCO3)
This reaction forms carbon dioxide (CO2), water (H2O), and sodium chloride (NaCl).
Balanced chemical equation: NaHCO3 + HCl → NaCl + H2O + CO2
Four products form when these reactants meet.
This reaction result code unlock.

Clue 4: Density and Buoyancy (Properties of Minerals)

Materials with density less than water's (1g/cm³) will float.
Lead: density = 11.34 g/cm³
Aluminum: density = 2.70 g/cm³
Wood: density = 0.70 g/cm³
Wood will float in water.
Using the floating material as next code

Clue 5: Acids and Bases (pH scale)

Substances with a pH less than 7 are acidic.
Substances with a pH greater than 7 are basic.
Substances with a pH of 7 are neutral.
pH of vinegar is less than 7.
The pH level (value) for vinegar is the next code.

Clue 6: Phase Changes and Energy (Latent Heat)

The latent heat of fusion of water: 334 J/g
To melt 1 kg (1000g) of ice, the formula: Energy = mass x latent heat
Calculating the energy needed to melt 1 kg of ice will be your final code (in Joules).

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Description

This quiz explores the various states of water, its properties, and its role as a solvent. Participants will answer questions related to the boiling and freezing points of water, solubility of substances, and chemical reactions involving common compounds. Test your knowledge and unlock the mystery of water!