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When examining the physical properties of an unknown substance characteristics is unsafe to observe?
It is unsafe to directly observe the unknown substance's reaction with open flames or highly reactive chemicals without proper safety precautions. Additionally, it is dangerous to inhale or ingest the substance without knowing its potential hazards. Always follow proper safety protocols and consult with experts if unsure.
What is always the same no matter how much of the substance you have?
The chemical composition or properties of the substance remain constant regardless of the quantity present.
What is a characteristic of pure substance?
A pure substance contains only one chemical identity, e.g. one element or one compound. While the properties of any pure substance might be completely different from that of another, the properties of any sample of a single pure substance will always be the same.
What is matter composed of identical atoms?
Matter is composed of identical atoms that make up elements. These atoms can combine to form molecules through chemical bonds, which in turn create the different substances we observe in the universe. The properties of matter are determined by the type of atoms present and how they are arranged.
Is smelling intensive or extensive properties?
Smelling is an intensive property. Intensive properties do not depend on the amount of the substance present. Smelling a substance can provide information about its identity, not its quantity or size.
When examining the physical properties of an unknown substance characteristics is unsafe to observe?
It is unsafe to directly observe the unknown substance's reaction with open flames or highly reactive chemicals without proper safety precautions. Additionally, it is dangerous to inhale or ingest the substance without knowing its potential hazards. Always follow proper safety protocols and consult with experts if unsure.
Is the difference between a pure substance and a mixture always easy to observe?
No, the difference between a pure substance and a mixture is not always easy to observe. While pure substances have definite chemical compositions and properties, mixtures consist of two or more substances physically combined. Some mixtures can be challenging to distinguish from pure substances based on visual observations alone.
What is characteristic property of a substance?
The characteristic properties of a substance are always the same whether the sample one is observing is large or small.
What is always the same no matter how much of the substance you have?
The chemical composition or properties of the substance remain constant regardless of the quantity present.
What kind of substance always has properties that are hard to see?
For example very rare radioactive chemical elements.
What is a characteristic of pure substance?
A pure substance contains only one chemical identity, e.g. one element or one compound. While the properties of any pure substance might be completely different from that of another, the properties of any sample of a single pure substance will always be the same.
What is matter composed of identical atoms?
Matter is composed of identical atoms that make up elements. These atoms can combine to form molecules through chemical bonds, which in turn create the different substances we observe in the universe. The properties of matter are determined by the type of atoms present and how they are arranged.
Is the mixing of iron and sulfur a physical change or chemical change?
It is always categorized as a Physical change as no new substance with different properties forms.
Is smelling intensive or extensive properties?
Smelling is an intensive property. Intensive properties do not depend on the amount of the substance present. Smelling a substance can provide information about its identity, not its quantity or size.
Molecules in an object or substance are always in?
Molecules in an object or substance are always in motion.
What are the properties of matters?
PROPERTIES OF MATTER 1. A Substance may be identified by certain Qualities, or Traits. A QUALITY OR TRAIT THAT IDENTIFIES A SUBSTANCE IS CALLED A PROPERTY. 2. The property of a substance stays the SAME even if the Volume changes. 3. COLOR, MASS, SMALL, DENSITY, AND COMPOSITION ARE ALL EXAMPLES OF PROPERTIES THAT CAN HELP SCIENTIST IDENTIFY SUBSTANCES. 4. A PROPERTY THAT ALWAYS STAYS THE SAME IS CALLED A CHARACTERISTIC PROPERTY BECAUSE IT IS A CHARACTERISTIC OF A PARTICULAR KIND OF MATTER. 5. EVERY SUBSTANCE HAS TWO KINDS OF PROPERTIES - PHYSICAL PROPERTIES AND CHEMICAL PROPERTIES. 6. A PHSICAL PROPERTY is a property of matter that can be OBSERVED or MEASURED WITHOUT CHANGING the composition of the substance. 7. Physical properties are often used to identify substances. 8. SOME PHYSICAL PROPERTIES OF MATTER: A. BIOLING POINT - The temperature at which a substance changes from a liquid to a gas. B. CONDENSATION POINT - The temperature at which a substance changes from a gas to liquid; same temperature as boiling point. C. DENSITY - The mass of a specific volume of substance. D. FREEZING POINT - The temperature at which a substance changes from a liquid to a solid; same temperature as melting point. E. MELTING POINT - The temperature at which a substance changes from a solid to a liquid. F. RESISTANCE - The opposition of a substance has to the flow of electric current. G. SOLUBILITY - The degree to which a substance will dissolve in a given amount of another substance, such as water.
What is the smallest unit of substances that keeps all of the physical and chemical properties of that substance?
The atom or smaller, the amount of protons like helium always has 2 protons no matter what.
