Praxis 5442 - Study guides, Class notes & Summaries

Matter - ANSWER Anything that has mass and takes up space. John Dalton - ANSWER Proposed elements were made of atoms; this theory is the Atomic Theory of Matter. Sir Joseph John (J.J.) Thompson - ANSWER Discovered electrons; pictured electrons embedded with protons.

1. Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? a. It interprets an observation. b. It applies to a narrow range of phenomena. c. It summarizes the most recent work of a scientists. d. It provides an explanation for the results of many experiments. - ANS d. it provides an explanation for the results of many experiments.

Middle School Science Praxis 5442 Exam Study Guide. Matter - answerAnything that has mass and takes up space. John Dalton - answerProposed elements were made of atoms; this theory is the Atomic Theory of Matter. Sir Joseph John (J.J.) Thompson - answerDiscovered electrons; pictured electrons embedded with protons. Ernest Rutherford - answerAtoms have positive nucleus; electrons orbit in empty space. Sir James Chadwick - answerExistence of neutrons in the nucleus. Physical Property - ans...

Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? A.It interprets an observation. B.It applies to a narrow range of phenomena. C.It summarizes the most recent work of a scientist. D.It provides an explanation for the results of many experiments. It provides an explanation for the results of many experiments. A hypothesis is a tentative explanation for a set of observations. Further experiments are conducted to test the...

ell - ANSWER Basic unit of life Organelle - ANSWER Parts of a cell ("organ" of the cell system) Nucleus - ANSWER a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.

Middle School Science Praxis 5442 Exam Study Guide. Substance - answermatter that has a uniform and definite composition mass - answerA measure of the amount of matter in an object physical property - answerof a substance is density density - answermass/volume physical properties of a substance - answercolor and odor, melting and boiling points, malleability and hardness chemical properties - answerCharacteristic that cannot be observed without altering the substance phases of matter -...

substance - ANSWER matter that has a uniform and definite composition mass - ANSWER A measure of the amount of matter in an object physical property - ANSWER of a substance is density density - ANSWER mass/volume physical properties of a substance - ANSWER color and odor, melting and boiling points, malleability and hardness

1. Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? a. It interprets an observation. b. It applies to a narrow range of phenomena. c. It summarizes the most recent work of a scientists. d. It provides an explanation for the results of many experiments. d. it provides an explanation for the results of many experiments. A hypothesis is a tentative explanation for a set of observations further experiments are conducted to ...

Physical Science Praxis 5442 Exam Study Guide. Atomic Structure - answerAn atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom's mass and is composed of protons and neutrons (except for common hydrogen which has only one proton). All atoms are roughly the same size Protons - answerPositively charged particles found within atomic nuclei Neutrons - answerA subatomic particle of a...

substance - ANS matter that has a uniform and definite composition mass - ANS A measure of the amount of matter in an object physical property - ANS of a substance is density density - ANS mass/volume physical properties of a substance - ANS color and odor, melting and boiling points, malleability and hardness