Answer:
C.) new substances that are present at the end of a reaction.
Explanation:
In a chemical reaction, substances are combined to form other substances. The substances, in a chemical reaction, that are combined or used up are called REACTANTS while those substances that are synthesised newly at the end of the reaction are called PRODUCTS.
For example, in the chemical reaction between carbon dioxide and water in photosynthesis to form glucose and oxygen as follows:
6CO2 + 6H2O --> C6H12O6 + 602
CO2 and H2O are the REACTANTS because they are the combined substances.
C6H12O6 and 02 are the PRODUCTS because they are new substances present at the end of the reaction.
Temperature affects magnetism by either strengthening or weakening a magnet's attractive force. A magnet subjected to heat experiences a reduction in its magnetic field as the particles within the magnet are moving at an increasingly faster and more sporadic rate.
Answer:
The asthenosphere is the denser, weaker layer beneath the lithospheric mantle. It lies between about 100 kilometers (62 miles) and 410 kilometers (255 miles) beneath Earth's surface. The temperature and pressure of the asthenosphere are so high that rocks soften and partly melt, becoming semi-molten.
Explanation:
The scientific method is similar to superstition, guessing, intuition, or hope because it is a form of finding the answer. It is different because it is a more effective and efficient way of finding an answer to a question.
Answer:
- Heat energy is transferred from homes by conduction through the walls, floor, roof and windows. It is also transferred from homes by convection. For example, cold air can enter the house through gaps in doors and windows, and convection currents can transfer heat energy in the loft to the roof tiles.
- Convection is the heat transfer due to the movement of a fluid, such as a gas or liquid, and carries heat energy away from the source of heat. When a substance is heated, it causes its particles to vibrate more. The more vibration, the more space they will take up and the less dense they will become.
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