Going Nuclear! Unit Review

Exceptions to Dalton's atomic theory include ...

• All matter is composed of extremely small particles called atoms.

• Atoms are divisible

• Atoms of a given element are identical in size, mass and other properties

• Atoms of different elements can combine in simple, whole number ratios to form chemical compounds.

• Atoms of a given element can have different masses called isotopes

J.J. Thomson’s _____________ model showed a uniform sphere containing positively charged matter with electrons spread throughout.

• chocolate chip cookie

• sphere

• jimmy neutron

• bohr-ing model

T/F: Nuclear reactions are affected by changes in temperature or pressure, or by the presence of catalysts.

• True

• False

How do archaeologists use radioactive decay to date matter?

• Carbon Dating

• Radioactive Decay

• Calcium Dating

What are advantages of SMRs?

• Cheaper to build than traditional reactors

• Easier to connect to solar energy sources

• 75% smaller than what we have now

• Will generate energy that is cheaper and cleaner

Identify the element: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

• Potassium

• Calcium

• Rubidium

• Strontium

What is the electron configuration for Silicon

• 1s² 2s² 2p²

• 1s² 2s² 2p⁶ 3s² 3p²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰

• 1s² 2s² 2p⁶ 3s² 3p⁴

A 17.50 g sample of potassium-40 was collected. After 8.757 x 10^9 years, 0.13671 g of the sample remained. What is the half-life of potassium-40?

• 5.87 x 10¹⁰

• 1.251 x 10⁹

• 8.757 x 10⁹

What type of nuclear decay is shown here?

• Alpha

• Beta

• Gamma

In a nuclear equation, this symbol should be shown for what kind of radiation?

• alpha

• beta

• gamma