Mid-Term Exam Review 2023

Which of the following is the atomic number of the atom represented in the above graphic?

• 16
• 17
• 18
• 33

Tags

NGSS.MS-PS1-1

Which subatomic particle(s) are located within the nucleus of an atom?

• Electrons
• Protons
• Neutrons an electrons
• Neutrons an protons

Which of the following correctly represents the electrical charges of the subatomic particles in the above graphic?

• I - negative charge, II – positive charge, III – no charge
• I - positive charge, II – negative charge, III – no charge
• I - no charge, II – positive charge, III – negative charge
• I - no charge, II – negative charge, III – positive charge

Tags

NGSS.MS-PS1-1

Which subatomic particle has the least mass; less than 1 amu?

• Neutron
• Electron
• Proton
• Nucleuses

What is the electrical charge of the nucleus of an atom that has 11 protons, 12 neutrons, and 11 electrons?

• -11
• 12
• -12
• 11

When determining an element's identity, what is the most important subatomic particle to examine?

• Electrons
• Neutrons
• Neutrinos
• Protons

Tags

NGSS.MS-PS1-1

Which of the atom models above represents a stable atom that will not react?

• Model A
• Model B
• Model C
• Model D

Tags

NGSS.MS-PS1-1

#8 Part A Two students make models of two elements and label them Element X and Element Y. Which statement is true of the two elements' reactivity?

• Both are chemically reactive.
• Both are chemically nonreactive.
• Element X is more chemically reactive than lement Y.
• Element Y is more chemically reactive than lement X.

Tags

NGSS.MS-PS1-1

# 8 Part B Which statement serves as evidence to support the answer to Part A?

• Both moels show two shells surrouning the nucleus.
• Both moels show ten neutrons in the nucleus.
• Element X has seven electrons in its outer shell.
• Element Y has an even number of protons an neutrons.

Tags

NGSS.MS-PS1-1

When determining an element’s chemical properties, the most important subatomic particle to look at is —

• protons
• valence electrons
• neutrons
• positrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2