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Classify the following as a chemical or physical property or change. A tree is struck by lightning. why?
The tree being struck by lightning is a chemical change because it involves a transfer of energy that can cause chemical reactions in the tree, such as burning or decomposition. This changes the tree's composition and cannot be easily reversed.
A match head ignites when struck Is this a chemical property?
Yes, the match head igniting when struck is a chemical property. It involves the chemical reaction between the match head and the striking surface that produces heat, leading to ignition.
Why is a match a example of chemical energy?
A match contains stored chemical energy in the form of the chemicals within the match head. When the match is struck, the chemicals undergo a chemical reaction that releases energy in the form of heat and light, demonstrating the conversion of chemical energy into other forms of energy.
How is lighting a match a chemical change?
When a match is lit, the chemicals in the match head undergo a chemical reaction resulting in the production of heat, light, and new chemical compounds like carbon dioxide and water vapor. This transformation of the chemical composition of the match represents a chemical change.
How do you tell if an element is a metal with a hammer?
You can tell if an element is metal with a hammer by determining if it is malleable (meaning that it can be molded or bent). Just smash it with the hammer, and if it shatters, it probably isn't a metal.
Classify the following as a chemical or physical property or change. A tree is struck by lightning. why?
The tree being struck by lightning is a chemical change because it involves a transfer of energy that can cause chemical reactions in the tree, such as burning or decomposition. This changes the tree's composition and cannot be easily reversed.
A match head ignites when struck Is this a chemical property?
Yes, the match head igniting when struck is a chemical property. It involves the chemical reaction between the match head and the striking surface that produces heat, leading to ignition.
When a match is struck is it a physical or chemical?
The first step (rubbing) is a physical process.
What non-metal shatters when struck?
Glass is a common non-metal material that shatters when struck due to its brittle nature. Glass is typically made by cooling molten silica-based materials quickly, which creates a structure that lacks long-range molecular order and makes it prone to breaking.
Is lighting a match from a matchbox a physical change?
Yes, lighting a match from a matchbox is a chemical change, not a physical change. When the match is struck, the chemicals on the match head react to produce heat, light, and a flame. This transformation is a chemical reaction, not just a change in physical state.
Is a coin physical or chemical changes?
A coin typically undergoes physical changes rather than chemical changes when it is minted or manipulated. Physical changes include alterations in shape, size, or surface texture, such as when a coin is struck or polished. Chemical changes, on the other hand, involve a change in the substance's chemical composition, such as corrosion or tarnishing over time. In essence, minting and handling a coin primarily involve physical changes.
Is bricks physical property or chemical property?
Properties of fresh concrete:WorkabilitysegregationBleedingHarshnessProperties of hardened concrete:DurabilityPermeabilityCreepShrinkage
What are the mechanical properties of metals?
The mechanical properties of metal are usually referred to as malleability being it it bends easily like gold without breaking or shatters when struck.
Is lighting a match a chemical change or physical?
It is a combination of both physical and chemical phenomenon..rubbing of the match against the box creates friction and thus creating heat which is a physical phenomenon.the heat produced then triggers a chemical reaction that lights the match stick
What is struck off property?
Struck off property is real estate that is so overdue in property taxes that it is a burden on the government authority. It is usually sold or auctioned by the governing county, where the buyer will pay a reduced value, plus any owed taxes.
Do real diamonds break?
Yes, they can, if struck in **exactly** the right spot. Gemstone diamonds are set so that the vulnerable planes are not presented to normal wear and tear. This is also a poor test for a real diamond, since when it shatters, your investment is worthless.
Why do metallic substances change shape when struck?
Malleability is a property of all metals.
