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nata0808 [166]
2 years ago
13

True or False:

Chemistry
1 answer:
lesya [120]2 years ago
6 0

Answer:

False

Explanation:

  • Mendeleev was the first scientist to arrange the element in such a periodic order but there was a mistake that he arranged in increasing order of mass.
  • Today we use the periodic table given by Henry Mosley where atomic no is first priority
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True or false: Observing a physical property of a substance will change the substances' identity I NEEED HELLLPPPPP NOOOWWWW !!!
andrew11 [14]

Answer:

false

Explanation:

a physical property can be observed and stay the same but a chemical property can't

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4 years ago
Fluorine gas reacts violently with water to produce HF and ozone
serious [3.7K]

Answer:

c8.3 moles

Explanation:

5 0
3 years ago
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Define and describe each of the following forms of energy and then classify each as either: potential energy, kinetic energy, or
TiliK225 [7]

Potential energy:   It is an energy stored in an object due to its position.

Chemical energy: It is an energy stored in a bonds of a chemical compound and this energy is released during the reaction in the form of heat.

Elastic energy: It is a stored potential energy in an elastic object when subjected to any deformation or change in shape.

Gravitational energy : It is an energy possessed by an object due its position in a gravitational field.

Electric energy: Energy due to flow of charged particles. It is a type of a stored potential energy due to relative position of charged particle .

Nuclear energy  : it is an energy stored in a nucleus of an atom. This energy kept the particles present inside the nucleus binded together.

Static electricity: It is  an electricity which arises due to presence of imbalance in charge within or on the surface of the material.

Transfer of some quantity of energy:

Heat energy: Transfer or flow of energy from one object to another in form of heat. This transfer is due to difference in temperature of two objects.

Electromagnetic energy:  It is an form of energy emitted by the magnetic field and electric field vibrating perpendicular to each other while propagation of the electromagnetic wave. Energy transfer takes place in from of electromagnetic wave.

Sound energy  ; it is the energy produced by the vibration of sound waves. the energy transferred from one substance to another in form of sound wave.

Kinetic energy: Its an energy possessed by an object due its motion.

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Thermal work : It is an energy posses by the body due to movement of the particles.

3 0
3 years ago
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Students mixed 20 mL of white glue and 20 mL of water in a cup. They added three drops of food coloring to the mixture. Then, 15
Dmitry_Shevchenko [17]

Hi im here to help!

Answer: a chemical reaction occurred because a new substance was formed with new properties!

Explanation: when u mix glue water and borax it forms into a new substance which is a chemical reaction

8 0
3 years ago
2) How many moles are in 3.34 x 10^24 molecules of C6H1206?
solniwko [45]

Answer:

5.55 mol

Explanation:

1 mole of any substance is equal to 6.022 × 10²³. So, if we do

3.34 x 10^24 * 1 / 6.022 × 10²³ is equal to 5.55 mol.

8 0
2 years ago
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