PhySci Review Set 1

Which of the following best describe stellar nucleosynthesis?

• A process of producing gases in the stars.

• A process of producing heavy elements in the molecular cloud.

• A process of massive explosion in the stars.

• A process of forming heavy elements within the stars.

Which of the following elements is not formed during the stellar evolution?

• Neon

• Magnesium

• Manganese

• Silicon

These are the abundant gases in the stellar evolution.

• Helium and Hydrogen

• Nitrogen and Chlorine

• Argon and Krypton

• Hydrogen and Nitrogen

When carbon fuses, what element is formed?

• Neon

• Oxygen

• Hydrogen

• Silicon

In the process of stellar nucleosynthesis, when silicon fuses what element is formed?

• Neon

• Iron

• Magnesium

• Manganese

When magnesium fuses, what element is formed?

• Neon

• Magnesium

• Oxygen

• Silicon

The atomic number is based on the number of__________.

• protons and electrons in the atom’s nucleus

• electrons and neutrons in the atom’s nucleus

• protons in the atom’s nucleus

• electrons in the atom’s nucleus

The mass number of an element is determined by ________.

• the number of protons and neutrons in the nucleus

• the number of protons in the nucleus

• the number of electrons in the nucleus

• the number of protons and electrons in the nucleus

The atomic number is equal to the number of ______.

• electrons and neutrons

• protons and electrons

• protons and neutrons

• mass number and electrons

The atomic number of lithium is 3, how many numbers of protons and electrons will the lithium have?

• 3 protons and 6 electrons

• 3 protons and 3 electrons

• 1 proton and 2 electrons

• 2 protons and 1 electron