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Matter CRCT Review

Matter CRCT Review. Which of the following statements describe elements?. All of the particles in the element are different. Elements can be broken down into simpler substances. Elements have unique sets of properties. Elements cannot be joined together in chemical reactions.

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Matter CRCT Review

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  1. Matter CRCT Review

  2. Which of the following statements describe elements? All of the particles in the element are different. Elements can be broken down into simpler substances. Elements have unique sets of properties. Elements cannot be joined together in chemical reactions.

  3. Physical science is: • The study of matter and energy. • The study of physics and chemistry. • Important in most sciences. • All of the above

  4. Which of the following sentences best describes table salt, NaCl? • Table salt is a compound made from two elements. • Table salt is a mixture made from two elements. • Table salt is an element made from two mixtures. • Table salt is an alloy made from a metal and a nonmetal.

  5. Look at each statement and tell if it is:True or False • Electrons are in the nucleus. • The atomic mass is the protons + neutrons. • Protons are positively charged. • In a balanced atom the electrons equal the neutrons. • Neutrons are negatively charged.

  6. An atom of carbon has 6 protons, 6 neutrons, and 6 electrons. What is the atomic mass? • A) 6 • B) 18 • C) 15 • D) 12

  7. List three clues that a chemical change is taking place. • A) ________________________________ • B)________________________________ • C) ________________________________

  8. Decide if the scenario below is a chemical or physical change. • The following picture shows potassium chromate solution added to a silver nitrate solution. The dark red solid is a precipitate of silver chromate.

  9. Fill in the blank with the correct answer. • _________________ is a pure substance made of two or more elements that combine chemically.

  10. Give an example that represents each of the three states of matter (not shown below).

  11. Fill in the blank. • The particles of a ____________ are very far apart and move independently of one another.

  12. Fill in the blank. • The shape and volume of matter in the _____ state do not change.

  13. One property that all particles of matter have in common is they… • A) Never move in solids. • B) Only move in gases. • C) Move constantly. • D) None of the above.

  14. Look at the chemical formula for jet fuel below. How many atoms does it contain and name the elements. • NH2 NH2

  15. What is it called when two or more different elements form a compound? • A) friendship • B) physical change • C) chemical bonding • D) states of matter

  16. What does valence mean and where can you find the valence electrons?

  17. What is a covalent bond?

  18. What is an ionic bond?

  19. By looking at the periodic table, how can you figure out… • The number of protons? • The number of electrons? • The number of neutrons?

  20. Recipe for a compound. • What three things do you need to create a compound? • 2 or more _______________________ • ______________ reaction • ______________ bond or a ____________ bond

  21. How is the periodic table organized? • Alphabetically by chemical name. • By properties of families and periods. • Randomly • By atomic mass.

  22. The Periodic Table of Elements divides metals from nonmetals. What makes an element a metal or nonmetal? • A) Density – metals are denser than nonmetals. • B) Color – metals are typically dull in color • C) Size – metals are more massive • D) Valence shell electrons: metals tend to lose electrons and nonmetals tend to gain electrons.

  23. When two or more elements join together chemically… • A) a mixture is formed • B) a compound is formed. • C) a substance that is the same element is formed. • D) the physical properties of the substances remain the same

  24. What is a pure substance that CANNOT be broken down into simpler substances by chemical means? • A) electron • B) element • C) equation • D) electricity

  25. What is the subatomic particle that has a positive charge? • A) atom • B) electron • C) proton • D) neutron

  26. Many drain cleaners contain a substance called sodium hydroxide. Sodium hydroxide is formed when sodium, oxygen, and hydrogen join chemically. How is sodium hydroxide classified? • A) a solution • B) a compound • C) an element • D) a mixture

  27. What term is used to describe all elements that are in the same vertical column on the periodic table? • A) atomic mass • B) atomic number • C) group • D) period

  28. When Sandra makes slushies she has to mix the koolaid in water. What do we call the koolaid and what do we call the water? • A) Koolaid is the solute, water is the solvent. • B) Water is the solute, Koolaid is the solvent. • C) Both the water and the Koolaid are the solute. • D) Both the water and the Koolaid are the solvent.

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