Which of the following is a chemical change?
a. sulfur and iron filings are mixed togeth...
Which of the following is a chemical change?
a. sulfur and iron filings are mixed together in a beaker at room temperature.
b. sulfur and iron filings are mixed together and the iron is removed with a magnet.
c. a mixture of sulfur and iron filings are heated until the contents glow red and the appearance of the mixture changes. a magnet can no longer remove iron filings.
d. a mixture of sulfur and iron filings are placed in carbon disulfide, the sulfur dissolves, leaving iron behind in the bottom of the beaker.
Answers: 3
Chemistry, 22.06.2019 18:00
Which three statements represent the benefits of performing experiments using computer simulations?
Answers: 2
Chemistry, 22.06.2019 21:30
Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?
Answers: 1
Chemistry, 23.06.2019 00:10
Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas
Answers: 3
English, 11.07.2019 09:30
English, 11.07.2019 09:30
English, 11.07.2019 09:30
Mathematics, 11.07.2019 09:30
English, 11.07.2019 09:30
Mathematics, 11.07.2019 09:30
Mathematics, 11.07.2019 09:30
Mathematics, 11.07.2019 09:30
Geography, 11.07.2019 09:30
Mathematics, 11.07.2019 09:30