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3 years ago

Campare and Conteast Physical and chemical properties.

Chemistry

1 answer:

I am Lyosha [343]3 years ago

3 0

Answer:

Physical properties are changes in color, weight, mass, density, volume, whether it is freezing, tarnishing, boiling, etc. while chemical properties are changes in the compound of the object such as whether an object is/isn't flammable, affected by acid, it dissolves, ferments, rots, ignites in water, etc.

Explanation:

Physical property examples: a piece of steel is cut in half, a sugar cube is ground up into a powder, ice melts into water, clouds form in the sky, you mow the lawn, the water turned purple when you dropped red and blue dye in it, leaves grow in the spring, ethyl alcohol boils at 79° C, you cut apples up

Chemical property examples: pancakes cook on the griddle, fireworks explode in th sky, Alka-Seltzer gives off carbon dioxide when added to water, roasting a marshmellow, milk sours when left on the counter, burning wood in a bonfire, salt dissolves in water, food is digested in the stomach

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3 years ago

A sample of lead has the density of 58 g/mL and a mass of 15.2g, what is the volume of the lead?

torisob [31]

Answer:

0.26 ml

Explanation:

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1 year ago

What method will speed up a chemical reaction?

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4 years ago

When a sample of purified phospholipids is mixed with water, spherical structures called liposomes form.

lutik1710 [3]

Answer:

B). The edges of lipid bilayers sheets fold back on themselves, forming a hollow sphere which releases the ordered waters at the edges.

C) The hydrophobic effect drives aggregation of phospholipids in an aqueous solution.

E) The cross-sectionalarea of the headgroups and acyl chains in the phospholipids are similar

Explanation:

A liposome is simply a tiny bubble also referred to as vesicle that is gotten from the same material as the one a cell membrane is made from. It should be noted that liposomes can be filled with drugs, and then used in the delivery of drugs for diseases such as cancer etc.

Phospholipids afford fluidity, permeability and stability to neural membranes. They're also vital for proper functioning of the receptors, integral membrane proteins, and the ion channels.

The characteristics of phospholipids that enable liposomes to form in water are:

• The edges of lipid bilayers sheets fold back on themselves, forming a hollow sphere which releases the ordered waters at the edges.

• The hydrophobic effect drives aggregation of phospholipids in an aqueous solution.

• The cross-sectionalarea of the headgroups and acyl chains in the phospholipids are similar

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4 years ago

Write out the BALANCED NET IONIC equation for the neutralization reaction that occurs between aqueous phosphoric acid and aqueou

ladessa [460]

Answer: Balanced net ionic equation is $3H^{+}(aq)+3OH^{-}(aq)\rightarrow 3H_2O(l)$

Explanation:

Neutralization is a chemical reaction in which an acid and a base reacts to form salt and water.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

$H_3PO_4(aq)+3NaOH(aq)\rightarrow Na_3PO_4(aq)+3H_2O(l)$

The ions which are present on both the sides of the equation are sodium and phosphate ions and hence are not involved in net ionic equation is:

$3H^{+}(aq)+3OH^{-}(aq)\rightarrow 3H_2O(l)$

8 0

3 years ago