5 Written Questions
5 Matching Questions
- nuclear reaction
- beta radiation
- cathode ray
- a a reaction that involves a change in an atoms nucleus
- b tiny dense region in the center of the atom; contains almost all the mass and holds protons and neutrons; positively charged
- c the radiation that was deflected toward the positively charged plate
- d a beam of electrons emitted by the cathode of an electrical discharge tube
- e smallest particle of an element that retains the properties of the element
5 Multiple Choice Questions
- contains two protons and two neutrons (2+)
- ~Matter is composed of extremely small particles called atoms.
~Atoms are indivisible and indestructible.
~Atoms of a given element are identical in size, mass, and chemical properties.
~Atoms of a specific element are different from those of another element.
~Different atoms combine in simple whole-number ratios to form compounds.
~In a chemical reaction, atoms are separated, combined or rearranged.
- The negatively charged particles found in all atoms; electrons are involved in the formation of chemical bonds.
- the sum of the atomic number and neutrons in the nucleus
- the rays and particles emitted by the radioactive material
5 True/False Questions
radioactive decay → when substances spontaneously emitted radiation
cathode ray tube → a beam of electrons emitted by the cathode of an electrical discharge tube
atomic mass unit (amu) → weighted average mass of the isotopes of that element
beta particle → contains two protons and two neutrons (2+)
nuclear equation → a reaction that involves a change in an atoms nucleus