SCIENCE SC

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What is an atom?

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An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus made of protons and neutrons, surrounded by electrons.

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What is a pure substance?

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A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

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What is a chemical symbol?

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A chemical symbol is a one or two-letter notation used to represent an element on the periodic table, such as 'O' for oxygen.

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What is kinetic energy?

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Kinetic energy is the energy of an object in motion. It depends on the mass and speed of the object.

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What is potential energy?

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Potential energy is the stored energy of an object due to its position or state. For example, a rock at the top of a hill has gravitational potential energy.

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How do waves transfer energy?

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Waves transfer energy through the vibration of particles in a medium, such as water or air, without the particles themselves moving long distances.

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What happens to kinetic energy when an object speeds up?

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When an object speeds up, its kinetic energy increases because kinetic energy is proportional to the square of its speed.

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What happens to potential energy when an object falls?

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When an object falls, its potential energy decreases as it loses height, while its kinetic energy increases as it gains speed.

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What is the relationship between kinetic and potential energy in a roller coaster?

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In a roller coaster, potential energy is highest at the top of the hills, and kinetic energy is highest at the lowest points of the track.

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What is energy?

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Energy is the ability to do work or cause change. It exists in various forms, including kinetic, potential, thermal, and chemical energy.

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