Chemistry Final Exam Review

What happens to the atoms of a substance in a physical change?

• Atoms get bigger

• Atoms change their arrangement and motion

• Atoms get smaller

• Atoms bond together differently

Tags

NGSS.MS-PS1-4

What happens to the atoms of a substance in a chemical change?

• Atoms get bigger

• Atoms change their arrangement and motion

• Atoms get smaller

• Atoms bond together differently

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

Tags

NGSS.HS-PS1-8

What quantities vary between isotopes of an element?

• protons, electrons, and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons
• neutrons and atomic mass

Tags

NGSS.HS-PS1-8

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• average atomic mass
• mass number

What particle decides the identity of an atom/element?

• proton
• neutron
• electron
• All of the above.

Tags

NGSS.MS-PS1-1

If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?    

• I and II
• III and IV
• I and IV
• I and III

Tags

NGSS.HS-PS1-8

Which of the following are examples of chemical changes?

• Burning paper

• Cutting paper

• Iron rusting

• Wrinkling paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Determine the molecular geometry of the given structure.

• Trigonal Pyramidal

• Trigonal Bipyramidal

• Trigonal Planar

• Tetrahedral

What intermolecular forces would exist between molecules of HF?

• London Dispersion Forces

• Dipole-Dipole Forces

• Hydrogen Bonding

• All of the above

Tags

NGSS.HS-PS1-3