GIVING BRAINLIEST FOR RIGHT ANSWERS PLS HELP A fuel scientist burnt a piece of coal and a piece of wood to compare the amount of heat given off by each. Which is the correct match of the type of change happening and the property being tested during the process?
answer choices
1.Physical change; Chemical property flammability
2.Physical change; Physical property of flammability
3.Chemical change; Physical property of heat of combustion
4.Chemical change; Chemical property of heat of combustion

: Chemical change; Chemical property of heat of combustion

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

Example: Melting of ice

Physical property is defined as the property of a substance which becomes evident during physical changes. Example: Melting point

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

Example: combustion

Chemical property is defined as the property of a substance which becomes evident during chemical changes. Example: Reactivity with other substances

Thus when a piece of coal and a piece of wood is burnt , there is formation of new substances and thus is a chemical change. Combustion is a chemical property as it is reactivity of a substance with oxygen.

eddibear3a and 18 more users found this answer helpful

THANKS

9

4.0

(9 votes)

Still have questions?

FIND MORE ANSWERS

ASK YOUR QUESTION

New questions in Chemistry

Pleasee help me, thank you A solution is made by dissolving 29 g of sodium lithium chloride in water to a final volume of 202 mL solution. What i…

If 49.0 g of O2 is mixed with 49.0 g of H2 and the mixture is ignited, what is the maximum mass of water that may be produced?

What is the current in a 160V circuit if the resistance is 10Ω?

wewuhfritgvufgfbIn which step did Jaclyn make an error? In step 1, she switched the x and y values in point 2. In step 2, she used the wrong formula…

The indicator phenolphthalein is added to the . a. Analyte b. Water c. Solute d. Titrant

Which two bonds are most similar in polarity? Which two bonds are most similar in polarity? O-F and Cl-F B-F and Cl-F I-Br and Si-Cl Al-Cl and I-Br C-…

The sample of 15.0 g of KCl is dissolved into a solution with a total volume of 250.0 mL. What is the molarity of KCl in the solution?

Select the correct answer A rock is dropped from a height of 2.5 meters. What is its velocity when it reaches the ground? a. 3.5 meters/second b. 7 m/…

i really need help with the rest of this assignment. theres 10 pages of multiple choice questions, i can mark brainliest and pay money if you help me …

plz tell me the answer

i really need help with the rest of this assignment. theres 10 pages of multiple choice questions, i can mark brainliest and pay money if you help me …

Of the following, which information is obtained by looking at the group numbers of elements? (Group A number designations: 1A-8A) The number of elec…

Which definition best describes the term activation energy? a) the energy required to remove an electron from a gaseous atom b) the minimum kinetic …

What is the area under the curve for the histogram below? A. 179 B. 121 C. 194 D. 86

May i get some help on this question

A gram of gasoline produces 45 kJ of energy when burned. Gasoline has a density of 0.77 g/mL. How would you calculate the amount of energy produced by…

Using the van der Waals equation, calculate the pressure for a 1.25 mol sample of xenon contained in a volume of 1.000L at 75°C; a = 4.194 L2 atm/mol…

Keto-enol tautomerization is an important mechanism in glycolysis. What the mechanism for keto-enol conversion involve

The inside window pane in your house feels very cold to touch on a winter night. How does the heat transfer? Question 9 options: A. Heat transfers f…

can anyone help with the last 10 pages of my chemistry pcket? it would mean a lot and i could pay

nosotros solamente tenemos hambre y supremo