Science

Question 1

Is considered the smallest particle of matter

Answer 1

Atom

Question 2

Is a representation of what an atom could look based on observation and scientific evidence that describe how atoms behave

Answer 2

Atomic model

Question 3

It is interesting to note that the story about the atom started way back to the time of the?

Answer 3

Ancient Greek

Question 4

Is made up of solid particles

Answer 4

Matter

Question 5

Varies in shape size and weight
Has a uniform structure all throughout

Answer 5

Matter

Question 6

is a particle smaller than an atom in which scientists used experimental observations to establish its existence.

Answer 6

subatomic particle

Question 7

Atoms are tiny invisible

Answer 7

particles.

Question 8

The atoms of an element are

Answer 8

all the same.

Question 9

The atoms of different elements vary from

Answer 9

one another.

Question 10

Atoms may form compounds when

Answer 10

combined together.

Question 11

Who was able to discover electrons from observations in his cathode ray tube experiment

Answer 11

Joseph John Thomson

Question 12

is a glass tubing with electrodes, namely, the anode (+) and the cathode (+), at each end

Answer 12

cathode ray tube

Question 13

proposed that the atom is a positively charged sphere filled with negatively charged particles known as electrons held by the attractive forces between the two.

Answer 13

Thomson

Question 14

Another significant event happened in 1909 when _______ discovered the nucleus and the proton through his now-famous gold foll experiment

Answer 14

Ernest Rutherford

Question 15

Rutherford by proposing that electrons are not stationary as they move around the nucleus in fixed circular orbits known as energy levels. He called this new model the _____ in 1913.

Answer 15

planetary model

Question 16

Bohr’s model of an atom showed you that electrons are spread in various energy levels. Chemists use this arrangement known as the

Answer 16

electron configuration

Question 17

is the region in the atom where electrons may be found, or where the electrons are mostly likely to be found at a given time.

Answer 17

electron cloud

Question 18

As the number of electrons increases, the electron cloud also becomes .

Answer 18

bigger