1 point Based on the information about the properties, are samples 1 and 2 the
same substance? *
Sample 1
Sample 2
An ending substance
?
?
Properties:
colorless liquid
melts at 12°C
Properties:
yellow solid
melts at 390°C
Properties:
gray solid
melts at 1.340°C
Yes
No
Something made of all the same atoms or group of atoms is called
point

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt