Subatomic Particles Chapter 4 Recap

Multiple Choice

What particle is positively charged and found in the nucleus?

• Electron

• Neutron

• Proton

• Isotope

Multiple Choice

What did Rutherford’s gold foil experiment reveal?

• Atoms are mostly empty space

• Atoms have no internal structure

• Electrons are in the nucleus

• Atoms are indivisible

Multiple Choice

What is the mass number of an atom with 6 protons and 6 neutrons?

• 6

• 12

• 3

• 18

Multiple Choice

What does the atomic number of an element represent?

• Number of neutrons

• Number of electrons

• Number of atoms

• Number of protons

Multiple Choice

Which of the following pairs are isotopes of each other?

• Carbon-12 and Carbon-14

• Hydrogen and Helium

• Oxygen and Carbon

• Neutron and Proton

Multiple Choice

What stays the same in all isotopes of an element?

• Number of neutrons

• Mass number

• Number of protons

• Number of electrons

Multiple Choice

What type of radiation can be stopped by paper?

• Alpha

• Beta

• Gamma

• All of them

Multiple Choice

What does the term 'half-life' refer to?

• Time until all atoms decay

• Time to double the atoms

• Time for half of a radioactive substance to decay

• Time to heat a substance

Multiple Choice

Why can't carbon-14 be used to date very old fossils (millions of years)?

• It becomes too radioactive

• It disappears completely

• Too little carbon-14 remains to detect

• It turns into helium

Multiple Choice

Which statement is TRUE about carbon-14?

• It increases after death

• It decays into hydrogen

• It’s used for dating metal artifacts

• It helps estimate the age of once-living things

Multiple Choice

Which of the following is a medical use of radiation?

• Heating food

• Treating Cancer

• Powering Batteries

• Making Plastic

Multiple Choice

What is the role of radioactive tracers in medicine?

• To cure diseases

• To image internal organs

• To replace broken bones

• To power X-ray machines