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A substance with a hardness of 8 will scratch a substance with a hardness of 7?
Yes, a substance with a hardness of 8 on the Mohs scale will scratch a substance with a hardness of 7. The Mohs scale compares the hardness of minerals, and a substance can scratch any mineral with a lower number on the scale.
How do chemists express the degree of acidity or basicity of a substances?
Chemists use the pH scale to express the degree of acidity or basicity of a substance. The pH scale ranges from 0 to 14, with values below 7 indicating acidity, 7 being neutral, and values above 7 indicating basicity. pH is a logarithmic scale, so each whole number change represents a tenfold difference in the acidity or basicity of the substance.
What pH values are acidic?
1-6
What is a pH scale and how is it arranged?
The pH scale is a measure of acidity or alkalinity of a solution, ranging from 0 to 14. A pH of 7 is considered neutral, below 7 is acidic, and above 7 is alkaline. The scale is logarithmic, meaning each whole number change represents a tenfold change in acidity or alkalinity.
If a substance is found at the high end of the pH scale is it an acid or a base?
A substance found at the high end of the pH scale is a base. The pH scale ranges from 0 to 14, with values below 7 indicating acidity, 7 indicating neutrality, and values above 7 indicating basicity. Therefore, a high pH signifies that the substance has a higher concentration of hydroxide ions (OH⁻) compared to hydrogen ions (H⁺).
When would a solution be considered a base?
When a substance goes above 7 on the pH scale, it is considered a base.
Where on the pH scale is the bases?
Bases are anything above a 7 on the pH scale. A substance with a pH of 7 is considered neutral.
What is the pH value that is considered neutral on the pH scale?
A pH value of 7 is considered neutral on the pH scale. This means that the substance is neither acidic nor basic.
A substance with a hardness of 8 will scratch a substance with a hardness of 7?
Yes, a substance with a hardness of 8 on the Mohs scale will scratch a substance with a hardness of 7. The Mohs scale compares the hardness of minerals, and a substance can scratch any mineral with a lower number on the scale.
When measured on the pH scale acid is?
The pH scale ranges from 0-14. From 0-6, the substance is acidic. A value of 7 means the substance is neutral. From 8-14, the substance is basic.
What is the scale you measure whether it is a substance is an acid or bases?
The scale used to measure whether a substance is an acid or a base is the pH scale. It is a scale that ranges from 0 to 14, with values below 7 indicating acidity, 7 being neutral, and values above 7 indicating alkalinity or basicity. The pH value of a substance is a measure of its concentration of hydrogen ions.
How do chemists express the degree of acidity or basicity of a substances?
Chemists use the pH scale to express the degree of acidity or basicity of a substance. The pH scale ranges from 0 to 14, with values below 7 indicating acidity, 7 being neutral, and values above 7 indicating basicity. pH is a logarithmic scale, so each whole number change represents a tenfold difference in the acidity or basicity of the substance.
What is a credit score scale?
The credit score scale ranges from 0 to 800. Everything above 720 is considered a good credit score. Below 500 is considered unacceptable.
When would solutions be considered acidic?
Solutions are considered acidic when they have a pH below 7. This indicates a higher concentration of hydrogen ions, which gives the solution its acidic properties. Common examples of acidic solutions include vinegar (pH around 2) and lemon juice (pH around 2-3).
On the pH scale any substance with a value between 0 and 6 is considered?
An acid. pH of 7 is considered neutral & pH of 8-14 is considered basic.
What do the numbers on the pH scales mean?
They represent the acidity/basicity of a substance. A number below 7 represents an acid, and a number above 7 represents a base. The numbers also represents the number of hydroxide or hydronium ions an acid or base has. They're basically what make acids and bases what they are.
What is an acid on the pH scale?
An acid is any substance below 7.0 on the pH scale. The lower the number, the stronger the acid. For instance, hydrochloric acid (HCl) in the stomach is typically at pH 1.0 - 2.5. The scale can range into negative numbers, but most substances are above pH 0.
