Which of these is a reason an engineer may choose to use a prefabricated

building component?

How are structural formulas used in organic chemistry?

The process by which plants and animals release stored carbon back into the atmosphere is called respiration. diffusion. photosynthesis. extraction.

Which of these best describes a scientific law ... ? 1. A rule made by a government 2. A rule that does not depend on observable evidence 3. A statement which varies under the same conditions 4. A statement about how things act in the natraul world

An example of a scientific law is the law of conservation of mass, which states that matter is neither created nor destroyed in a chemical reaction.

How does the number of valence electrons for elements change across a period? The number decreases. The number increases. The number stays constant. The number increases and then decreases for noble gases

How is electricity generated in a nuclear power plant?

Where do the materials used to make electronic devices come from

Which of the following are likely to form an ionic bond? -silicon and oxygen -oxygen and oxygen -carbon and hydrogen -magnesium and oxygen

The proper name for a carbohydrate polymer with 2 subunits is

Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks. We should properly report the temperature measurement as: