Why is it correct to say seawater is a mixture.

The definition of solubility is the maximum quantity of solute that can dissolve in a certain quantity of solvent or quantity of solution at a specified temperature or pressure (in the case of gaseous solutes). For Gases, solubility decreases as temperature increases (duh...you have seen water boil, right?) The physical reason for this is that when most gases dissolve in solution, the process is exothermic. This means that heat is released as the gas dissolves. This is very similar to the reason that vapor pressure increases with temperature. Increased temperature causes an increase in kinetic energy. The higher kinetic energy causes more motion in the gas molecules which break intermolecular bonds and escape from solution. Do you need any more?

Base has formula .

Example of a base is a soap,

and it has a bitter taste, feels slippery to the touch.

From the formula we can see that a base has hydroxide ion (OH), so a base increases the concentration of hydroxide ions in an aqueous solution.

3. Reacts with active metals to produce hydrogen gas is not a property of the base; this is a property of acids.

Answer:

Answer A is wrong

Explanation:

because the temperature increases as soon as the temperature increases

Hope it helps you

Final answer:

Statements A and C are both false. Adding heat to a substance typically causes its temperature to rise, but this is not the case during a phase change. During a phase change, a substance's temperature remains constant because the added heat goes into the phase transition.

Explanation:

In physics, understanding how heat energy affects the temperature and phase state of a substance is crucial. Out of the provided statements, option A and C are false.

A. The temperature of a substance goes down as heat is added - This is false. By default, adding heat to a substance causes its temperature to rise, unless a phase change is in progress.

C. If heat is added to a substance, the temperature always increases - This statement is also false. While it's true in many situations, during a phase change (for example, when ice is melting or water is boiling), adding heat does not raise the temperature. Instead, the energy goes into changing the phase of the substance.

Meanwhile, option B and D are correct. B. During a phase change, the temperature of a substance does not change, and D. The temperature of a substance is constant during a phase change - Both are true statements that reflect the same fact: during a phase change, any added heat goes into the phase transition, not into raising the temperature.

Learn more about Heat and phase changes here:

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The atom which it would be most difficult to remove an electron from is: an atom of a noble gas.

An atom refers to a smallest, indivisible unit that comprises the matter that forms all chemical elements.

Basically, the three (3) distinct particles that makes up an atom include;

• Protons.

• Neutrons.

• Electrons.

Electrons are the subatomic particles of a chemical element that are negatively charged with a magnitude of -1.

Noble gases can be defined as a group of chemical elements with eight (8) valenceelectrons, which simply means they are found in group eight (8) of the periodic table and have a full octet.

Some examples of noble gases are:

• Argon.

• Neon.

• Krypton.

• Helium.

• Xenon.

The octet rule states that atoms of chemical elements lose, gain or share electrons, in order to have eight (8) electrons in their valence shell.

Based on the octet rule, it would be most difficult to remove an electron from the atom of a noble gas because of its high ionization energy and a completely filled valence (outermost) shell.

In conclusion, the full octet possessed by noble gases make them unlikely to combine with other chemical elements.

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