Lesson 1 and 2 Concept Check

The idea behind the big bang theory was first proposed by...

• George Gamow

• George Lemetere

• George Lemaitre

• Fred Hoyle

Big bang is not an explosion but a constant expansion and cooling.

• TRUE

• FALSE

• PARTLY TRUE

• INSUFFICIENT DETAIL

He coined the term big bang and is one of the root for the misconception that big bang is an explosion.

• Arnold Penzias

• Fred Hoyle

• Edwin Hubble

• George Lemaitre

Edwin Hubble observed the redshift which lead to the discovery of one of the evidences of big bang. Redshift denotes that...

• object moves at the same pace with the observer

• object moves parallel to the observer

• objects moves toward the observer

• object moves away from the observer

Energy is produced by the coming together of 2 particles through this type of nuclear reaction.

• Nuclear bombardment

• Nuclear fission

• Nuclear fusion

• Nuclear emission

A radioactive decay wherein there is an addition of alpha particle.

• Alpha decay

• Beta decay

• Gamma radiation

• Bombardment of an alpha particle

A type of chemical bond that produces charged particles.

• Ionic bond

• Covalent bond

• Metallic bond

Type of chemical bond that is exclusively present between nonmetals.

• Ionic bond

• Covalent bond

• Metallic bond

The f subshell can accomodate a maximum of how many electrons?

• 2

• 6

• 10

• 14

The rule in chemistry that states certain elements in the periodic table can hold more than 8 valence electrons.

• The octet rule

• The special octet rule

• The expanded octet rule

• The octet stability rule