Sassafras Chemistry Chapter 9 Quiz

If you fire a neutron at a uranium atom, the nucleus splits to form uranium-234!

• TRUE!

• FALSE!

Within the _______ of an atom, there is a large amount of energy!

Unstable atoms release some of the nuclear energy from its nucleus as a particle, making the atom ___________.

• Electromagnetic!

• Molecular!

• Radioactive!

• Disappointed!

Which type of radiation particles are made from two protons and two neutrons?

• Alpha

• Beta

• Gamma

Which type of radiation particles are made from extremely high-energy electrons?

• Alpha

• Beta

• Gamma

Which type of radiation particles are made from high-energy electromagnetic waves?

• Alpha

• Beta

• Gamma

Actinides are a group of 15 ______ metals.

Which actinides occur naturally in large quantities?

• URANIUM!

• THORIUM!

• ACTINIUM!

• CURIUM!

• PLUTONIUM!

When a nuclear reactor is in operation, the central active core contains a huge number of neutrons traveling in every direction at very high speeds (creating heat). The rate of fissions in the uranium nuclei in a reactor is controlled chiefly by control blades of boron-stainless steel which are inserted vertically alongside the fuel elements. Boron has the property of absorbing neutrons without re-emitting any. When the control blades are fully inserted, they absorb so many neutrons from the uranium that there are not enough to allow a chain reaction to continue.

The rate of fissions in the uranium nuclei in the MIT reactor is controlled chiefly by six control blades. What element is part of those blades that absorbs neutrons without re-emitting any?

Who was the Ninja teacher?

• Haipa Yagi

• Masaki

• Attosuru Toro

• Chiteki Kirin