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Ch.4 8th Grade(Study Guide)
Dot diagrams are used to represent
Outer electrons `
If an isotope has an atomic number of 25, which of the following is most likely to be its mass number ?
The particles that make up an atom are
Protons, neutrons,and nuclei
In an atom, electrons
Travel outside the nucleus
A certain atom has 26 protons,26 electrons,and 30 neutrons.It mass number is ?
Which type of particle would NOT be deflected by a magnetic field ?
The maximum number of electrons is the second energy level of an atom is ?
Which item best represents Thomson's mental image of an atom ?
A chocolate-chip cookie
Which of the following properties