Chemistry Review Unit 1 and 2

Which is the correct definition of matter?

• Anything that has mass and occupies space

• Anything that takes up space and has energy.

• Anything that has mass and energy.

• None of the above

Which of the following is the smallest unit of matter that retains the properties of that element?

• Proton

• Neutron

• Electron

• Atom

What is true of all atoms of Nitrogen?

• They have a mass of 14

• They have 7 protons                                                                

• They have 7 neutrons                                                             

• They have 6 protons

Tags

NGSS.MS-PS1-1

Fill in the blanks for the first row?

• Atomic #: 3       Protons: 3        Neutrons: 4         Electrons: 3

• Atomic #: 4       Protons: 3        Neutrons: 4         Electrons: 3

• Atomic #: 3       Protons: 3        Neutrons: 4         Electrons: 4

• Atomic #: 3       Protons: 3        Neutrons: 7        Electrons: 7

Tags

NGSS.HS-PS1-1

An atom has a mass of 22. What is a possible element?

• Titanium (Ti)

• Calcium (Ca)

• Chlorine (Cl)

• Sodium (Na)

Tags

NGSS.HS-PS1-1

Fill in the blanks for the third row?

• Element: Calcium       Protons: 20        Neutrons: 22        Electrons: 20

• Element: Zirconium     Protons: 42        Neutrons: 42       Electrons: 42

• Element: Calcium       Protons: 20        Neutrons: 22        Electrons: 22

• Element: Calcium       Protons: 22        Neutrons: 22        Electrons: 20

Tags

NGSS.HS-PS1-1

What is the best definition of an isotope?

• 2 atoms with the same number of protons but different electrons

• 2 atoms with the same number of neutrons but different electrons

• 2 atoms with the same number of protons but different masses and neutrons

• 2 atoms with the same number of neutrons but different protons

Tags

NGSS.HS-PS1-8

Select the pair of Isotopes.

• 9B and 9Be

• 92Nb and 94Nb

• Co-59 and Co-59

• Ga-70 and Ge-70

Tags

NGSS.HS-PS1-8

The element Cobalt has a relative atomic mass of 59 and an atomic number of 27. Which of these is a true statement about each neutral cobalt atom? (Mass number = number of protons + number of neutrons)

• It contains 59 neutrons

• It contains 27 electrons.

• It contains 32 protons.

• It contains equal numbers of neutrons and electrons.

Tags

NGSS.MS-PS1-1

Fill in the table below!

• Aluminum

  13

  29

  14

• Aluminum

  13

  29

  13

• Silicon

  14

  28

  13

• Silicon

  14

  28

  14

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2