Select the examples that provide evidence of chemical change.
a. the solid begins to melt as h...
Select the examples that provide evidence of chemical change.
a. the solid begins to melt as heat is applied to it.
b. two odorless liquids combine to form a unique odor.
c. the salt crystals dissolve in water as the mixture is stirred.
d. the beaker feels hot to the touch after adding the powder to the blue liquid.
Answers: 3
Chemistry, 22.06.2019 00:00, lukeakalucas
Alarge marble is dropped in a graduated cylinder with 35ml of water in it. the water level increases to 49ml. what is the volume of the marble
Answers: 1
Chemistry, 22.06.2019 22:30, skinniestoflegends
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
Answers: 2
Chemistry, 23.06.2019 01:00, bsheepicornozj0gc
Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c
Answers: 1
Chemistry, 23.06.2019 04:31, diamondscott9297
Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.
Answers: 1
Spanish, 23.04.2020 18:01
Mathematics, 23.04.2020 18:01
Mathematics, 23.04.2020 18:01
Mathematics, 23.04.2020 18:01
Mathematics, 23.04.2020 18:01