What is the most likely reason why scientists change a model? a. the public wants to understand a concept more easily b. students need illustrated models in a study guide c. new discoveries makes the current model inaccurate d. current models may be uninteresting

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.