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scoray [572]
3 years ago
12

Digestion is the process of breaking down food into substances that the can use. Which of the following is a physical change tha

t takes place during digestion?
A- Bite helps break down fast
B- The teeth grind food into smaller pieces
C- Enzymes help break down carbohydrates
Chemistry
2 answers:
Yuri [45]3 years ago
8 0
C - Enzymes help break down carbohydrates.
ankoles [38]3 years ago
3 0

Answer:

B- The teeth grind food into smaller pieces

Explanation:

A physical change is a type of change in which the form of matter or substance is altered but not its chemical composition. The size or shape of matter may be changed, but no chemical reaction occurs. Physical changes are majorly a reversible process. The teeth grinding food into smaller pieces affects the size and shape not the chemical composition of the food.

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Which of the following reactions is spontaneous?
AveGali [126]
Answer is: <span>lumps os sugar dissolving in water.
Sugar has very good solubility in water and it dissolves readily, which is </span><span>example of a physical change.
</span>Gibbs free energy (G) determines if reaction will proceed spontaneously, if ΔG is negative, reaction is spontaneous <span>(ΔG = ΔH - T·ΔS).
</span>In other examples, reactions are spontaneous in reverse way, for example spontaneous is forming sodium chlorine from sodium metal and chlorine gas, but not sodium chloride forming sodium metal and chlorine gas, because a lot of energy is needed for that reaction.
5 0
3 years ago
How many atoms are in 1.6g C? Answer in units of atoms. <br><br> (no answer choices were given)
maksim [4K]

Answer:

6.022  ×10(index 23) / 7.5 = 0.8293 ×10(index 23)

Explanation:

molar mass of C =  12gmol

therefore in 12g of C there is one mole or an amount of 6.022 ×10(index 23)

∴12g/6.02210(index 23) ×1.6g

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2 years ago
Plz answer quick
SCORPION-xisa [38]
It’s baron I got it right on edg
8 0
3 years ago
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Which substance would retain the most heat for the longest period of time?
Harrizon [31]
<h3>Water</h3>

<em>Specific heat is defined as the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius.</em>

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4 0
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Arisa [49]

The path of energy flow from the sun to the humpback whale is as follows:

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<h3>What is energy?</h3>

Energy is the ability to do work.

The primary source of energy on the earth is the sun.

The energy from the sun is used by producers to produce food on which other organisms depend on.

The energy from the sun gets to the humpback whale through producers such as plankton.

The path of energy flow from the sun to the humpback whale is as follows:

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Learn more about energy flow at: brainly.com/question/21786633

4 0
2 years ago
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