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Preliminary KBS ScienceWeek2021
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An acidic solution can turn ___ litmus paper become ___
blue, red
In Haber process, nitrogen gas is reacted with hydrogen gas to form ______
ammonia/ NH3
Avogadro constant tell us that in ______ of an atom/molecule contains 6.02 x 1023 atoms/molecules
1 mole
The number of covalent bond formed between nitrogen atoms in N2 is ______
Three (3)
According to collision theory, increasing temperature can ______reaction rates of the chemical reaction
increase / speed up / go up
Chemical reaction that gives out energy to the surrounding is called______
Exothermic reaction / exothermic
I’m a simple organic compound and belong to alkane group. The simplest ratio between C and H atoms making me up is 1:4. Who am I?
Methane
The states of matter where particles of the matter are close together in a weak intermolecular force but can still past slide each other is called ______
Liquid
T/F: Air conditioner was put on high position so that cool air will go down and hot air will go up. This transfer heat is called conduction.
False
What is the name of this electrical symbol? (battery/ bulb)
bulb
T/F: When you do a free throw in basketball, the basketball moves in a curve. This motion is called parabolic motion.
True
T/F: Ball falls from a certain height. In this phenomena, both the potential energy and kinetic of the ball decrease.
False
Who is the physicist which attempts to explain relativity? (Einstein/ Tesla)
Einstein
T/F: The mass of Earth is bigger than the mass of the Moon. The Earth and moon have the same gravitational force towards each other.
False
UV and Infrared is electromagnetic waves. They have different frequencies but the same speed in the vacuum.
True
T/F: Mike makes a conclusion about quantities and units. His conclusions are “the unit of power is joule and the unit of pressure is pascal”.
False
Yang termasuk pemanfaatan bioteknologi adalah nomor ... 1. frozen yoghurt 2. es nata de coco selasih 3. tahu crispy salted egg 4. corndog mozarella
1, 2, dan 4
Apakah bisa sepasang suami istri bergolongan darah A dan B memiliki anak bergolongan darah O?
ya, bisa
Setelah menyentuh batang bambu, tangan Cici terasa gatal. ini terjadi karena di permukaan batang bambu terdapat rambut-rambut halus yang disebut ...
trikoma
Berada dalam posisi tertekuk dalam waktu lama menyebabkan kaki kesemutan. sistem organ yang sebenarnya terdampak saat kesemutan adalah ...
sistem saraf
Organ ini merupakan bagian dari sistem imun sekaligus sistem ekskresi. ia adalah organ terbesar pada tubuh manusia. organ apakah itu?
kulit
Kekerabatan antara terong dan cabai lebih dekat daripada kekerabatan antara merica dan ketumbar' apakah pernyataan tersebut benar?
ya
Lumut kerak merupakan contoh bioindikator karena hanya mampu hidup di daerah dengan udara yang bebas polusi. lumut kerak sebenarnya merupakan hasil interaksi 2 organisme dari spesies yang berbeda. hubungan keduanya termasuk jenis interaksi
simbiosis mutualisme
Fungi untuk membuat tempe memiliki karakteristik yang sesuai dengan nomor ... 1. bersel tunggal 2. berkembangbiak dengan zygospora 3. berfotosintesis dengan bahan kedelai 4. dapat tumbuh dengan baik bila disimpan dalam freezer
1 dan 2


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