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What is the shiny black substance in pencils called?
The shiny black substance in pencils is called graphite. It is a form of carbon that is used for writing and drawing due to its ability to leave a mark on paper. Graphite is mixed with clay to create pencil lead, with the ratio determining the hardness or softness of the pencil.
Is a lead a pure substance or mixture?
mixture
Is pencil lead a mixture or a substance?
Its a mixture
Is pencil lead a mixture or pure substance?
Its a mixture
How does the pH of a substance affect our environment?
The pH of a substance thrown in the environment can lead to a degradation of soils and waters.
Why is your car battery plates black?
The plates in a car battery are typically made of lead and are often coated with a black substance, usually a lead oxide. This black coating helps to enhance the battery's efficiency by increasing the surface area for the chemical reactions that produce electricity. Additionally, the black color can help dissipate heat more effectively, contributing to better performance and longevity of the battery.
What is the black writing part of a pencil made out of?
The black writing part of a pencil, also known as the "lead," is actually made of graphite. It is a form of carbon that is commonly mixed with clay to create a substance that writes smoothly on paper.
Is lead an organic substance?
No.
What is the shiny black substance in pencils called?
The shiny black substance in pencils is called graphite. It is a form of carbon that is used for writing and drawing due to its ability to leave a mark on paper. Graphite is mixed with clay to create pencil lead, with the ratio determining the hardness or softness of the pencil.
Black substance found in chimneys?
The black substance found in chimneys is typically creosote, a residue left behind when wood or fossil fuels are burned. Creosote is highly flammable and can lead to chimney fires if not cleaned regularly. It is important to have chimneys professionally inspected and cleaned to prevent any potential dangers.
Can black substance inside the radio battery kill human?
The black substance found inside a radio battery is often a result of leakage or corrosion and can include toxic materials like potassium hydroxide or lead. While direct contact with this substance can be harmful, it is unlikely to be fatal unless ingested in significant quantities or if it causes severe chemical burns. However, exposure should be avoided, and proper safety precautions should be taken when handling damaged batteries. If there are concerns about exposure, it's best to seek medical advice.
Which substance turns black on heating in air?
There are many chemical reagents which turn black while heating in air including lead sulfate.
What substance is reduced in a lead storage battery?
The substance that is reduced in a lead battery as it generates electric currents is lead dioxide. You can recharge the battery by reversing the direction the current is flowing.
What is the composition of lead?
substance and binder
A substance that has high reactivity does what?
A substance with high reactivity readily undergoes chemical reactions with other substances or even with itself, often releasing energy in the process. This high reactivity can lead to the substance easily forming new compounds or decomposing into simpler substances.
What does a substance do when it is cooled?
When a substance is cooled, its molecules slow down and have less energy, causing them to move closer together. This often results in the substance contracting or becoming more dense. In some cases, cooling a substance may also lead to a change in state, such as from a gas to a liquid or from a liquid to a solid.
Is lead a pure substance?
Lead is an element so it is a pure substance.
