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Why is hydrogen a pure substance?
Hydrogen is a pure substance because it is a single element made up of only 1 type of particle.
How does the composition of a mixture of hydrogen and oxygen differ from the composition of a compound containing hydrogen and oxygen?
A mixture of hydrogen and oxygen consists of particles of both elements physically combined, maintaining their individual properties. In contrast, a compound containing hydrogen and oxygen forms chemical bonds to create a distinct substance with unique properties, such as water (H2O).
Is reacting with oxygen a physical property of hydrogen?
No, reacting with oxygen is a chemical property, not a physical property, of hydrogen. Physical properties are characteristics that can be observed without changing the substance's chemical composition, such as density or color. Chemical properties, on the other hand, describe how a substance can change or react to form new substances.
Is hydrogen a mixture or substance?
Substance
Is a pure substance flammable?
Some are flammable and some are not. This depends on the chemical properties of the individual substance. Nonflammable pure substance include helium, water, and gold. Flammable pure substances include hydrogen, hexane, and magnesium.
How are characteristic properties of given substance different from its other properties and chemical properties?
A substance's characteristic properties are the most recognizable properties of that substance. Chemical properties are exhibited as one substance is chemically transformed into another (e.g., iron rusting).
How does a mixture of hydrogen and oxygen differ from a compound of hydrogen and oxygen?
A mixture of hydrogen and oxygen means that the two gasses would be mixed together, but remain chemically distinct from one another and retain their own properties. You would still have separate hydrogen and oxygen molecules. In a compound of hydrogen and oxygen, water, the two elements are chemically combined to form a new substance with its own set of properties.
Does a compound produce a new substance with unique qualities?
Compounds are made out of atoms of different elements. The properties are different than the properties of the constituent elements.For example, Water is made out of Hydrogen and Oxygen. Both Oxygen and Hydrogen are gasses at room temperature. Water is a liquid at room temperature with very different properties.
What has definite physical and chemical properties?
A substance has definite physical and chemical properties. These properties are characteristic traits that define the substance and distinguish it from others, such as its boiling point, melting point, density, and reactivity with other chemicals. For example, pure water has a boiling point of 100°C at standard atmospheric pressure and reacts with sodium to form sodium hydroxide and hydrogen gas. These consistent properties allow for the identification and classification of the substance.
What substance physical properties depend on the composition?
A characteristic property is a chemical or physical property that helps identify and classify substances. The characteristic properties of a substance are always the same whether the sample you are observing is large or small.
Is displaces hydrogen from an atom a physical or chemical property?
Displacing hydrogen from an atom is a chemical property, as it involves a chemical reaction that results in a change in the substance's composition and properties. Physical properties, on the other hand, are those that can be observed or measured without changing the substance's chemical composition.
Does water retain the properties of hydrogen and oxygen?
No. It's very different. For a start, both hydrogen and oxygen are gases under ordinary conditions but water is a fairly dense liquid. Hydrogen burns explosively. Things burn vigorously in oxygen. Water can be used to extinguish many types of fires. And so it goes.
