Chem 2a-f test

Which event is H (hydrogen) produced?

Big Bang

Which event/stage is He (helium) produced?

Big Bang and Main Sequence of both low mass and high mass stars

What event/stage are elements with masses up to 0 produced?

Main Sequence/Red Giant of both low mass and high mass stars

What event/stage are elements with masses up to Fe (iron) produced?

Main Sequence/Red Giant of high mass stars only

What event/stage are elements with mass greater than Fe (iron) produced?

Supernova (of high mass stars)

What are the four properties used to determine a star’s stage in its life cycle?

• surface temperature

• Color

• Mass

• Luminosity

What will most likely happen to a high mass star?

The high mass star will go to supernova and then become a neutron star or black hole

In the Nebula, is one force more dominant (gravity or fusion)?

Yes, the inward force of gravity is dominant as there is no fusion occurring.

In the Main sequence, are the forces at equilibrium?

Yes, gravity forces and fusion forces are at equilibrium

• NOTE: outward force is fusion, inward is gravity

In Red Giant, is one force more dominant?

The outward force of fusion is more dominant than inward force of gravity.

In White Dwarf, is one force more dominant?

The inward force of gravity is more dominant because fusion has stopped occurring.

X-rays, beta rays, gamma rays, alpha rays, and ultraviolet light are all…

Ionizing radiation

Infrared waves, visible light, radio and TV waves, and microwaves are all…

Non-ionizing radiation

What types of radiation are nuclear?

Alpha, beta, and gamma

What types of radiation are electromagnetic?

X-rays, visible light, gamma rays, microwaves, infrared waves, radio/TV waves, and ultra violet waves

Which type of electromagnetic radiation has the highest energy?

gamma rays

Which type of electromagnetic radiation has the lowest frequency?

Radio waves

Which type of electromagnetic radiation has the long wavelength?

Radio waves

Atomic number is…

(Z) * also number of protons/electrons

Mass number is…

(A)

In what way is the periodic table arranged?

in order of increasing atomic number

Will elements in the same family/group OR the same period/series have similar chemical and physical properties?

Same family or group because they have the same number of valence electrons

Identity family groups in order

• alkali metals

• Alkaline earth metals

• Lanthanides (inner transition)

• Actinides (inner transition)

• Transition metals

• Metalloids

• Non-metals

• Halogens

• Noble gases

What properties of metal distinguish them from nonmetals?

• luster/shine

• Good conductors of heat and electricity

• Malleable and ductile

• Solid at room temperature