I will make brainliest! PLS HELPPP!! Answer these questions:
1. How is a mixture different from a compound?
2. How are the atoms in a compound held together?

Classify the following as mixtures, elements, or compounds:
3. H20
4. H4
5. Fe + S​

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass