Physical Science Final Exam

The atomic number for an element is the same as the number of __________ in the nucleus of the atom.

• protons

• neutrons

• electrons

• molecules

In an uncharged atom, the atomic number it equal the number of ________________________.

• protons

• neutrons

• electrons

• quarks

• protons AND electrons

To find the atomic mass of an atom, add the number of __________ + __________

• protons + electrons

• protons + neutrons

• protons + electrons + neutrons

• neutrons + electrons

To find the number of neutrons in an atom, use the formula __________ - __________ = number of Neutrons

• atomic mass - atomic number

• protons + electrons

• Protons - electrons

• Metals - Nonmetals

The 2 particles in an atom that weigh the same (1 amu) are the __________ and __________

• protons

  electrons

• photons

  protons

• quarks

  electrons

• protons

  neutrons

Tags

NGSS.MS-PS1-1

The subatomic particle that weighs much less is the others is the________________________.

• proton

• neutron

• electron

• positron

For an uncharged atom, the number of protons is also equal to the number of __________

• neutrons

• electrons

• atoms

• molecules

These determine the reactivity and chemical properties of an atom.

• colors

• neutrons

• electrons

• protons

The identity of the element is determined by the number of ________________________.

• protons

• neutrons

• electrons

• atomic mass

Most of the mass of the atom is in the ________________________ but it has very little ________________________.

• nucleus; volume

• electron cloud; mass

• proton; charge

• neutron; energy

Tags

NGSS.MS-PS1-1