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Question 1

Study of structure, properties, composition, and changes that matter undergoes.
- Study of matter.
- Central science.

Answer 1

Chemistry

Question 2

Father of modern chemistry.

Answer 2

Antoine Lavoisier

Question 3

Physical material of the universe.
- Anything that occupies space, and has mass.

Answer 3

matter

Question 4

Refers to the amount of matter present in the material. (Constant)

Answer 4

mass

Question 5

Mass x pull of gravity
Varies on the pull of gravity.

Answer 5

weight

Question 6

Pull of gravity on moon

Answer 6

1.622 m/s2

Question 7

pull of gravity on earth

Answer 7

9.8m/s2

Question 8

Conceptualize the first true periodic table

Answer 8

ANTOINE-LAURENT de LAVOISIER

Question 9

Invented the first lighter.

Answer 9

JOHANN WOLFGANG DOBEREINER

Question 10

1st law of triads

Answer 10

Fe, Co, Ni

Question 11

2nd law of triads

Answer 11

Ru, Rh, Pd

Question 12

3rd law of triads

Answer 12

Os, Ir, Pt

Question 13

Arranged the periodic table by increasing MASS NUMBER. (Atomic Weight)

Answer 13

JULIUS LOTHAR MEYER & DMITRI MENDELEEV

Question 14

• Re-arranged the periodic table of elements. (Now: Modern Periodic Table)
• Arranged by increasing ATOMIC NUMBER

Answer 14

HENRY GWYN JEFFREYS MOSELEY

Question 15

• Building blocks of matter.
• Basic unit of matter.

Answer 15

atom

Question 16

who named atoms?

Answer 16

democritus

Question 17

Particles inside the atom.

Answer 17

subatomic particles

Question 18

subatomic particles

Answer 18

proton
neutron
electrons

Question 19

mass of proton

Answer 19

1.6726 x 10^-24

Question 20

mass of neutrons

Answer 20

1.675 x 10^-24

Question 21

mass of electrons

Answer 21

9.10938 x 10^28

Question 22

P + N (Found inside the nucleus)

Answer 22

mass number

Question 23

Gives the identity to the element.

Answer 23

proton

Question 24

Only subatomic particle affected by the chemical reactions.

Answer 24

electrons

Question 25

Equal number of Protons and Electrons.

Answer 25

neutral atoms

Question 26

Protons and Neutrons

Answer 26

nucleons

Question 27

Not affected by chemical reactions.

Answer 27

nucleons (protons and neutrons)

Question 28

Charged atoms. - Unequal # of proton and electron

Answer 28

ions

Question 29

Negative Charged Atom

Answer 29

anion

Question 30

Positive Charged Atom

Answer 30

cation