AHS Chem Sem 1 Final Review

How many protons does an atom of Carbon have?

• 6
• 4
• 12
• 14

Tags

NGSS.HS-PS1-1

Which group of elements on the periodic table has properties that include being brittle, dull and poor conductors?

• semimetals
• non metals
• alkali metals
• transition metals

Tags

NGSS.HS-PS1-1

In the formula, MgCl₂, what does the 2 tell you?

• Chlorine has 2 valence electrons
• Chlorine has a 2+ charge
• Chlorine has a 2- charge
• There are 2 Chlorine atoms

Tags

NGSS.MS-PS1-1

Which of the following is a property of an ionic compound?

• low melting point
• low boiling point
• high melting point
• form hard, brittle crystals 

All atoms are ____.

• positively charged, with the number of protons exceeding the number of electrons

• negatively charged, with the number of electrons exceeding the number of protons

• neutral, with the number of protons equaling the number of electrons

• neutral, with the number of protons equaling the number of neutrons

The nucleus of an atom is ____.

• composed of protons and neutrons

• has more protons than neutrons

• contains protons and electrons

• consists of electron and neutrons

Tags

NGSS.MS-PS1-1

Isotopes of the same element have different ____.

• positions on the periodic table

• chemical behavior

• atomic numbers

• mass numbers

What types of atomic orbitals are in the third principal energy level?

• s and p only

• p and d only

• s, p, and d only

• s, p, d, and f

What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?

• 2d

• 3d

• 3f

• 4s

Tags

NGSS.HS-PS1-1

If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed in the three orbitals?

• one electron in each orbital

• two electrons in one orbital, one in another, none in the third

• three in one orbital, none in the other two

• Three electrons cannot fill three empty 2p atomic orbitals.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2