Question 1

Atomic Theory (John Dalton)

Accepted Answer

this theory describes atoms, Dalton described the nature of atoms and how to interact with each other
then later, other chemists have been working out the fine details of atomic structure and chemical interaction

Answer

a

Answer

b

Question 2

careful observations on the laboratory or macroscopic scale

Accepted Answer

since there wasn't much technology out there, this was the only way scientists could detect individuals' atoms and molecules

Answer

a

Answer

b

Question 3

how could scientists predict atom interactions

Accepted Answer

by the energy changes, kinetic energy (energy of motion), potential energy (energy of position)

Answer

a

Answer

b

Question 4

The Big-Bang theory

Accepted Answer

the cosmological theory that postulates that the universe started as an extremely small and dense entity that violently exploded into our currently known universe

Answer

a

Answer

b

Question 5

nucleosynthesis

Accepted Answer

the synthesis of heavy nuclei from lighter nuclei within a star
the creation of atomic nuclei
the collisions between the protons and neutrons resulted in the formation of deuterium, helium, and lithium nuclei

Answer

a

Answer

b

Question 6

m

Accepted Answer

m o

Answer

m

Question 7

Red giants

Accepted Answer

a star is about to explode in a supernova, caused by the cooling of elements

Answer

a

Answer

b

Question 8

supernova

Accepted Answer

usually the explosion of a red giant star that has synthesized a significant amount of iron

Answer

a

Answer

b

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