Chem true or false question?

If you count 7 pennies, you can only report one significant figure in that measurement.





True


False





2. How would you classify raisin bran?





a. pure substance-compound


b. mixture-heterogeneous


c. pure substance-element


d. mixture-homogeneous


e. none of these





3. Which of the following items is a pure substance?





a. air


b. seawater


c. brass


d. ice


e. none of these





Thanks!Chem true or false question?
true


2. mixture-heterogeneous


3. iceChem true or false question?
1. True


2. b


3. e. none of them
True

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