Chemistry is a major part of science that discusses the elements and basic substances of forms of life. It helps investigate how things grow and change and how they react over time.
The law of conservation of matter says that in chemical reactions, the total mass of the products must equal the total mass of the reactants.
When building a bridge, engineers want the bridge cables to have great:
- Tensile strength has to do with the amount of stress that a thing is able to resist without breaking under legthwise stress.
- This is measured by the largest load (kg) per unit area as it refers to the amount of stress an object or material is <u>able to endure</u> without tearing apart or breaking off.
- As a result of this, when building a bridge, engineers want the bridge cables to have great tensile strength so that they do not collapse <em>under the weight</em> placed on them.
- A bridge is a passage or structure that <em>connects between two obstacles.</em> A lot of cars, heavy lorries and trucks pass through a bridge, so iit is important that the bridge cables are able to resist this stress effectively.
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- Therefore, the correct answer is tensile strength
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The mixture can be separated into three separate components by using a centrifuge and a separating funnel.
A centrifuge is used to separate a solid that is held in suspension by a liquid. In this case a solid dissolved in water. In contrast, a separating funnel is used to separate two immiscible liquids.
-First take the flask containing the two immiscible liquids and pour contents in to a closed separating funnel.
- The most dense liquid will settle at the bottom, then open the separating funnel valve to collect contents of dense liquid into a flask.
- The remaining liquid on the separating funnel can be collected in a different flask.
-Now take the liquid that is a solution of a solid in water and pour in a test tube. Place the contents in a centrifuge.
- Centrifuge at high speed until the solid sinks to the bottom of the test tube, then decant the liquid into a flask and the solid remains in the test tube