What happens to particles when a substance gains energy and changes its state of matter? (HINT- give at least 2 things that occurs) Will give Brainliest to the FIRST person who answers!!

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

Even before world war ii had ended, it was apparent that the allies would not remain friends in the post-war era. describe how the conflict between the superpowers manifested itself in the two following region: asia

A.passes laws and adopts budgets b.resolves disputes among members c.ensures legislation is applied fairly d.represents the eu globally a recent challenge to the european union created by a member state is a.migration b.free trade c.brexit d.the euro which is the most powerful position in the british government? a.the monarch b.the chancellor c.the prime minister d.the president which describes a constitutional monarchy? a.a monarchy in which a king or queen has all the power b.a monarchy in which the people elect the king or queen c.a representative government with a mostly ceremonial ruler d.a representative government with only one set of written laws