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Dahasolnce [82]
3 years ago
12

Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece o

f used gum. The gum flattens and sticks to her shoe. When she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. She thinks, “What a great demonstration of the properties of metals!”
What properties of metals would Mrs. Franklin most likely teach about with this demonstration?

conductivity and luster
ductility and malleability
malleability and reactivity
conductivity and ductility
Chemistry
2 answers:
Lady bird [3.3K]3 years ago
7 0

Answer:

ductility and malleability

Explanation:

i got an 100 on edge :) if you need the other answers tell me

Troyanec [42]3 years ago
3 0

Answer: To me its ductility and malleability

Explanation:

when she stepped on the melted gum it was flattened. But when she picked her foot up it stretched out, which to me is a thin sheet can be easily formed by hammering or rolling. For ductility it is the ability of a solid material to deform under tensile stress. The stress being her foot and  the material is the gum.

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Need this ASAP so hury up​
Genrish500 [490]

Answer:

The type of bonding found in sodium chloride is called ionic bonding.

Explanation:

Ionic bonding is the attraction between two atoms with opposite charges.  In sodium chloride, sodium has a positive charge and chlorine has a negative charge; therefore, they attract one another and form a bond.

6 0
3 years ago
Explain why electrical charges flow from one atom to another?
N76 [4]

Answer:

Any conductor (thing that electricity can go through) is made of atoms. Each atom has electrons in it. If you put new electrons in a conductor, they will join atoms, and each atom will deliver an electron to the next atom. This next atom takes in the electron and sends out another one on the other side.

Explanation:

Is this helpful?

5 0
3 years ago
Read 2 more answers
A popular classroom demonstration consists of filing notches into a new penny and soaking the penny in hydrochloric acid overnig
Ivanshal [37]

Answer:

HCl conc=2.2M

Explanation:

From the question we are told that:

Mass of zinc Mass_{z_n}=2.5g

Initial conc of HCl HConc_1=6.0M

Initial volume of HCl Hvol_1=20.0mL

Molar mass of zinc M_{Z_n}=65.38g/mol

Generally the equation for reaction  is mathematically given by

2HCL+Zn\implies ZnCl_2 +H_2

Generally the equation for moles of zinc m_{z_n} is mathematically given by

m_{z_n}=\frac{Mass_{Z_n}}{M_{Z_n}}

m_{z_n}=\frac{2.5g}{M_{65.38}}

m_{z_n}=0.038molZn

Generally the equation for moles of m_{HCl} is mathematically given by

m_{HCl}=HConc_1*Hvol_1

m_{HCl}=6.0M*20.0mL

m_{HCl}=6.0M*20.0*10^{-3}L

m_{HCl}=0.12\ mol\ HCl

Generally the reacted moles of HCl HCl_[reacted] is mathematically given by

Since

Zn:HCl =1:2

Therefore

HCl_[reacted]=0.038*\frac{2}{1}

HCl_[reacted]=0.076mol \ HCl

Generally the moles of HCl after Zn oxidization X is mathematically given by

x=0.12-0.076

x=0.044 mol HCl

Generally the conc of hydrochloride acid X is mathematically given by

X=\frac{0.044}{0.020}

X=2.2 M Hcl

Therefore Conc of HCl

HCl conc=2.2M

5 0
3 years ago
Why the telescopes that detected no optical radiation are useful for studying objects in space
Afina-wow [57]
I would say that if they would use the regular ones, they would not be able to see very far. as well with that i would add that they need special lenses to see far. 
hope that this helps you! =)
8 0
4 years ago
Why is water considered a pure substance and not a mixture?
Minchanka [31]
Water is made of only one molecule which can be chemically separated into hydrogen and oxygen. The answer is D.
5 0
3 years ago
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