Which of these must form when two elements join together during a chemical change?

A bioengineered technology that changes how an organism functions is an adaptive technology. which of these is an example of an adaptive technology?

Where is the reactant located in a chemical equation?

Which two tools couldl be used to determine the speed at which a person runs?

Which group of substances contains only compounds?

In which of these cases does a physical change occur?

Which of these best describes what must happen to the particles in water before it can change from one state to another?

Lemon juice has asour taste and turns blue litmus paper red. What do these properties sugest about lemon juice?

What keeps comets in orbit around the sun?

In an electromagnet, a current is passed through loops of wire that surround a core. Which material would be best to use as the core of an electromagnet?

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