Chemistry A midterm

If an element has an atomic number of 13 and an atomic mass of 26, how many neutrons does it have?

• 10

• 13

• 15

• 17

What two particles are found in the nucleus, and what are their charges?

• Neutron (o) and Electron (-)

• Proton (+) and Electron (-)

• Neutron (-) and Proton (o)

• Neutron (o) and Proton (+)

Where are electrons found in an atom?

• In a cloud surrounding the nucleus

• Deep inside the nucleus

• Electrons aren't a part of atoms.

• Mixed evenly throughout the entire atom.

Which statement is true about elements of the same group in the periodic table?

• They have very similar chemical and physical properties.

• They have a wide range of chemical and physical properties.

• They have a repeating pattern of physical and chemical properties.

• They have no common patterns or properties.

Tags

NGSS.HS-PS1-1

[Ar] 4s2 3d7

What element is this noble gas configuration?

• Rhodium

• Cobalt

• Iron

• Nickel

Tags

NGSS.HS-PS1-1

[Kr] 5s2 4d10 5p5

• Francium

• Iridium

• Silver

• Iodine

Tags

NGSS.HS-PS1-1

What city did the Manhattan Project take place in?

• Los Alamos, NM

• Ney York City, NY

• Daytona Beach, Fl

• Robberts, ID

Who was named the director of the Los Alamos Laboratory in New Mexico?

• Oppenheimer

• Einstein

• Obama

• Trump

What is the electron configuration for sulfur?

• 1s2 2s2 2p6 3s2 3p4

• 1s2 2s2 2p6 3p6

• 1s1 2s3

• 1s2 2s2 sd7

Tags

NGSS.HS-PS1-1

What kind of charge does an ion have?

• Positive

• Negative

• Neutral

• Can be A or B