0
What else can I help you with?
When a substance changes into a different substance a blank change has occurred?
If form changes but identity doesn't change then it is a physical change.
Is oxygen a chemical change or a physical?
Oxygen is a chemical element, so its presence does not involve a chemical change. It undergoes physical changes such as changes in state (gas to liquid) based on temperature and pressure.
When matter cannot be separated into more than one substance by physical or chemical means it is called?
A pure substance.
Why is an element's solubility a physical property?
You don't need to alter the identity of the substance to determine its solubility. See the Related Questions link the left of this answer for more information about physical vs. chemical properties.
An element cannot be changed by any physical or chemical means because those changes do not affect the atom's number of neutrons?
This statement is incorrect. An element is defined by its number of protons, known as its atomic number. Changing this number would result in a different element. Physical and chemical changes can alter the arrangement of atoms in a substance without changing its fundamental identity as an element.
When a substance changes into a different substance a blank change has occurred?
If form changes but identity doesn't change then it is a physical change.
Is oxygen a chemical change or a physical?
Oxygen is a chemical element, so its presence does not involve a chemical change. It undergoes physical changes such as changes in state (gas to liquid) based on temperature and pressure.
Can you tell whether a substance is an element or compound based on physical appearance?
No, you cannot determine whether a substance is an element or compound based solely on its physical appearance. Elements and compounds can exhibit a wide range of physical appearances, so other methods are necessary to distinguish between them, such as chemical analysis or examining their chemical formulas.
How can knowing the physical properties of a substance be useful?
The physical properties of a pure substance can be used to identify it. A pure substance is an element or a compound, not a mixture.
When matter cannot be separated into more than one substance by physical or chemical means it is called?
A pure substance.
Why is an element's solubility a physical property?
You don't need to alter the identity of the substance to determine its solubility. See the Related Questions link the left of this answer for more information about physical vs. chemical properties.
An element cannot be changed by any physical or chemical means because those changes do not affect the atom's number of neutrons?
This statement is incorrect. An element is defined by its number of protons, known as its atomic number. Changing this number would result in a different element. Physical and chemical changes can alter the arrangement of atoms in a substance without changing its fundamental identity as an element.
Can element be decomposed by physical change and why?
No, elements cannot be decomposed by physical changes because they are pure substances consisting of only one type of atom. Physical changes, such as melting or boiling, do not alter the chemical identity of a substance. To break down an element into simpler substances, a chemical change is required, which involves altering the bonds between atoms.
Is the melting point of a substance considered a chemical property?
No, the melting point of a substance is a physical property, not a chemical property. Chemical properties describe how a substance reacts with other substances to form new substances, while physical properties describe characteristics that can be observed without changing the substance's chemical composition.
Is melting a phyical or chemical change?
Physical. Melting is always a physical change.
A substance that is formed from atoms with a characteristic set of physical and chemical properties is called what?
A substance that is formed from one type of atoms with a characteristic set of physical and chemical properties is called an element.
Is iron physical changes or chemical changes?
Iron is a chemical element, not a change.
