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TEAM 1 QUIZZ
TEAM 1 QUIZZ
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1
Which scientific proposed the planetary model of the atom?
C) Niels Bohr
A) J.J. Thomson
B) Ernest Rutherford
D) James Chadwick
2
Which of the following is an element?
A) Salt
B) Sugar
C) Oxygen
D) Carbon dioxide
3
Which of the following is a pure substance?
C) Water (H₂O)
D) Salad
B) Milk
A) Air
4
How does chemistry help in medicine?
A) It finds natural things.
B) It makes things to help or find sickness.
C) It watches animals.
D)It builds bridges
5
What science is called the central science?
C) Chemistry
B) Astronomy
A) Biology
D) Math
6
Which of the following is an example of a mixture?
A) Pure water
C) Air
B) Table salt
D) Gold Correct answer
7
How does chemistry help in farming?
A) It helps animals.
D)It finds new vaccines
B) It studies DNA.
C) It makes things like plant food and weed killers.
8
Which of these is a chemical change?
B) Boiling water
A) Crushing a can
C) Digesting food
D) Cutting hair
9
How does chemistry use math?
C) Math makes the periodic table.
B) Math helps make formulas and numbers about matter
D) Math helps study animals.
A) Math finds the names of elements.
10
Which of these is NOT a sign of a chemical change?
D) Formation of a precipitate
C) Production of gas
A) Change in color
B) Change in shape
11
Who discovered the electron?
J.J Thompson
Ernest Rutheford
Marie Curie
Niels Bohr
12
What is the characteristic of a compound?
D) Always found in nature
A) Can be separated by physical means
B) Made of only one type of atom
C) Has a fixed chemical formula
13
Which of the following is an example of a homogeneous mixture?
D) Orange juice with pulp
C) Trail mix
A) Granite
B) Vinegar
14
What kind of property is “density”?
D) Physical
C) Nuclear
B) Biological
A) Chemical
15
Who was the first person to organized the chemical elements based on their properties?
Niels Bohr
J.J Thomson
Dmitri Mendeleev
Antonie Lavoisier
16
Which of the following changes is reversible?
D) Cooking pasta
B) Burning a candle
C) Melting chocolate
A) Rusting of iron
17
What does physics give to chemistry?
C) Names of body parts
D) Food and vitamins
A) A list of elements.
B) Ideas and rules to understand matter and atoms.
18
Which scientific discover the neutron?
B) Ernest Rutherford
C) Niels Bohr
D)James Chadwick
A) J.J. Thomson
19
Which change is a physical change?
D) Wood burning
C) Ice melting
B) Iron rusting
A) Toasting bread
20
Which option correctly classifies sand and iron filings?
D) Heterogeneous mixture
C) Element
A) Compound
B) Homogeneous mixture
21
Who establish the Law of Conservation of mass?
John Dalton
Dmtri Mendeleev
Antonie Lavoisier
Robert Boyle
22
. How is a mixture different from a compound?
D) A compound is not made of element
B) A compound retains the properties of its components
A) A mixture has a definite ratio
C) The components in a mixture can be separated physically
23
Which philosopher proposed that atoms are indivisible components of matter?
Socrates
Aristotle
Democritus
Plato
24
How does biology use chemistry?
C) To look at the stars.
B) To study things inside living things.
D)To count numbers
A) To make metal and plastic
25
Who discovered the nucleus by the gold foil experiment?
Niels Bohr
Ernest Rutherford
Max Planck
J.J. Thomson
