Unit 1 Pre-Test

Which of the following accurately describes the modern atomic theory?

• Atoms are indivisible and indestructible particles.

• Atoms are composed of protons, neutrons, and electrons.

• Atoms consist of a nucleus surrounded by orbiting electrons.

• Atoms can be cannot be divided into smaller particles.

In evaluating different models of the atom, what aspects should be considered in relation to the relative size, charge, and position of protons, neutrons, and electrons?

• Only size and charge

• Only charge and position

• Size, charge, and position

• Only size and position

Tags

NGSS.HS-PS1-8

How are elements heavier than hydrogen produced according to scientific evidence?

• Nuclear fission

• Nuclear fusion

• Chemical reactions

• Radioactive decay

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

What does the movement of electrons and light emission help identify?

• Atomic mass

• Electron configuration

• Elements

• Ionization energy

Tags

NGSS.HS-PS1-1

Which model can be used to predict the relative properties of elements based on patterns of electrons in the outermost energy level?

• Bohr model

• Rutherford model

• Dalton model

• Quantum mechanical model

Tags

NGSS.HS-PS1-1

Which subatomic particle is responsible for the identity of an element?

• Neutron

• Electron

• Proton

• Isotope

In the periodic table, what does the atomic number of an element represent?

• Number of protons

• Number of electrons

• Sum of protons and neutrons

• Atomic mass

How does the size of an atom change as you move from left to right across a period in the periodic table?

• Increases

• Decreases

• Remains constant

• Depends on the element

Which property of an element is related to its tendency to attract electrons in a chemical bond?

• Atomic mass

• Ionization energy

• Electronegativity

• Atomic radius

Tags

NGSS.HS-PS1-2

What information does the electron configuration of an atom provide?

• Number of protons

• Arrangement of electrons in energy levels

• Atomic mass

• Number of neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2