8.5a 8.5b 8.5c

• 6
• 7
• 8
• 9

Tags

NGSS.MS-PS1-1

The atomic number of an atom is determined by the number of --

• Protons in the atom's nucleus

• Neutrons in the atom's nucleus

• Electrons in the atom's electron cloud

• Protons and neutrons in the atom's nucleus

Aluminum (Al) is a --

• Metal

• Nonmetal

• Metalloid

Which of the following is the best description of an atom?

• A core of protons surrounded by electrons

• Protons and neutrons grouped in loose arrangements

• A core of protons and neutrons surrounded by electrons

• Protons, neutrons, and electrons grouped in a solid core

Tags

NGSS.MS-PS1-1

A neutral atom is an atom with the same number of:

• electrons and neutrons

• protons and neutrons

• protons and electrons

• electrons and valence electrons

Most elements in the Periodic Table are classified as --

• Metals

• Noble gases

• Nonmetals

• Reactants

What types of particles are found in the cloud surrounding the atom's nucleus?

• Positively charged particles and negatively charged particles

• Negatively charged particles only

• Neutral particles and positively charged particles

• Positively charged particles only

Which description best describes a Neutron?

• positive charge, 1 amu, located in the nucleus

• negative charge, 0 amu, located in the electron cloud

• neutral charge, 1 amu, located in the nucleus

• negative charge, 1 amu, located in the nucleus

______ always gives the identify of the atom.

• Protons

• Neutrons

• Electrons

Elements in the same period/row have the same--

• # of valence electrons

• # of protons

• # of energy shells

• # of neutrons