Fundamentals of Chemistry in Engineering

What is the simplest unit of an element?

• molecule
• cell
• compound
• atom

What are the subatomic particles?

• mass number, atomic number

• protons, neutrons, and electrons

• cells, tissue, organ

• nucleus, nuclei, atom

Which of the following illustration is the Gold Foil Experiment?

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Which of the following is the lewis dot structure of magnesium chloride?

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What is the role of combustion in energy production?

• It has no role in energy production
• It releases heat energy for electricity or engine power
• It absorbs heat energy from the environment
• It only produces light energy

What is nuclear rection?

• Process of nuclear fission or fusion
• The movement of tectonic plates
• The process of photosynthesis
• A type of chemical reaction

What is the importance of nuclear energy?

• Nuclear energy is important for its low greenhouse gas emissions and high energy output.
• Nuclear energy is important for its negative impact on the environment and high greenhouse gas emissions.
• Nuclear energy is important for its high cost and low energy output.
• Nuclear energy is important for its unreliability and low availability.

What is the difference between in ionic and covalent bonding?

• Electron sharing in ionic bonding and electron transfer in covalent bonding
• Both ionic and covalent bonding involve electron sharing
• Ionic bonding occurs between two nonmetals while covalent bonding occurs between a metal and a nonmetal
• Electron sharing in covalent bonding and electron transfer in ionic bonding

What is octet rule?

• Octet rule states that atoms always have 12 electrons in their outer shell
• Octet rule is the tendency of atoms to have 6 electrons in their outer shell
• Atoms tend to gain, lose, or share electrons in order to have a full outer shell of eight electrons.
• Octet rule refers to the number of protons in an atom's nucleus

What is the difference between polar and non polar molecules?

• Polar molecules have a slight positive and negative charge, while nonpolar molecules have no charge.
• Polar molecules repel water, while nonpolar molecules attract water.
• Polar molecules have no charge, while nonpolar molecules have a slight positive and negative charge.
• Polar molecules have a slight negative charge, while nonpolar molecules have a slight positive charge.