Atoms MEGA-TEST Review

Which atomic particle has a positive charge?

• Protons

• Neutrons

• Electrons

Which atomic particle has almost no mass?

• Protons

• Neutrons

• Electrons

Which atomic particle has no charge?

• Protons

• Neutrons

• Electrons

If an atom has an atomic mass of 101 and an atomic number of 44, how many neutrons would it have?

• 44

• 57

• 101

• 145

Which of the following correctly identifies the element and lists the number of particles?

• Helium: 1 proton, 1 neutron, 1 electron

• Hydrogen: 1 proton, 2 neutrons, 2 electrons

• Helium: 2 protons, 2 neutrons, 2 electrons

• Helium: 2 protons, 2 neutrons, 4 electrons

What is the total number of electrons in an atom with an atomic number of 13 and a mass number of 25?

• 12

• 13

• 25

• 38

Which letter in this model of Boron represents a neutron?

• X

• W

• Y

• Z

What is the charge of the nucleus of this atom?

• positive

• negative

• neutral

Which two particles in this neutral atom are used to determine the mass?

• W,Y

• X,Y

• Y,Z

• X,Z

How many protons does this atom have?

• 2

• 4

• 5

• 11