This topic contains a solution. Click here to go to the answer

Author Question: Which of the following does not represent a chemical change? (Read 111 times)

byomi

  • Full Member
  • ***
  • Posts: 130

Question 1

Which one of the following represents a chemical change?

◦ boiling water to form steam
◦ burning a piece of coal
◦ heating lead until it melts
◦ mixing iron filings and sand at room temperature
◦ breaking glass

Question 2

Which of the following does not represent a chemical change?

◦ a freshly cut apple turns brown
◦ milk turns sour on standing at room temperature
◦ when cooled to 0°C, liquid water becomes ice
◦ frying an egg
◦ fermentation of sugar to alcohol


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by byomi on Nov 5, 2023

Sha

  • Full Member
  • ***
  • Posts: 179
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly




byomi

  • Member
  • Posts: 130
Reply 2 on: Nov 5, 2023
Thanks for the timely response, appreciate it


TheDev123

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

For a complete list of videos, visit our video library