CATS Quiz ! 1-3-18

1) How many different elements are in the compound sodium carbonate (Na2CO3)?

2) You are given a flask with a mixture of salt and water and asked to separate the two. You could… A) use a bar magnet to remove the salt crystals from the water. B) evaporate the water and collect the salt. C) put it under the microscope to separate the salt and water. D)let the salt settle out and pour off the pure water from the top.

The pictures below show water in several forms Ice Water steam cloud 3) In which form are the water molecules moving most rapidly? A) steam B) water C) ice cube D) a cloud

4) Which of the following statements about the states of matter is NOT true? A)The molecules of a solid have no molecular motion. B) The kinetic theory says that all substance (solid, liquid or gas) consists of a large number of minute particles called molecules. C) The molecules of a liquid have greater molecular motion that those of a solid. D) The molecules of a gas have greater molecular motion that those of a liquid.

5) Which of the following is a characteristic of all chemical changes? A) A different state of matter is produced. B) Some mass is converted to energy. C) Some form of light is given off. D) A new material is formed.

CATS The End

CATS 1-4-18

1

A. element B. atom C. compound D. mixture 2. The diagram shows a molecule of methane. Which type of substance is methane? A. element B. atom C. compound D. mixture Methane CH4

What is the best title for the chart below? Question 3 What is the best title for the chart below? ____________?______________ Helium Colorless; less dense than air Iron Attracted to a magnet; melting point of 1,535 degrees Celsius Oxygen Odorless; gas at room temperature The Periodic Table of the Elements Gases Found in Air Chemical Properties of Some Compounds Physical Properties of Some Elements

18 Ar Argon 40.0 4) The diagram above shows the entry for one of the elements in the periodic table. Based on the diagram, an argon atom has 18 protons 18 neutrons 40 protons 40 electrons

27 Co Cobalt 58.9 28 Ni Nickel 58.7 Which of the following statements about cobalt (Co) and nickel (Ni) is true? Nickel has a greater average atomic mass than cobalt does. B. Nickel atoms have more protons than cobalt atoms do. C. Cobalt atoms have more electrons than nickel atoms do. D. Cobalt and nickel belong to the same group on the periodic table

CATS 6. The density of a block of wood with a volume of 5 cubic centimeters and a mass of 100 grams is A. 20 g/cm3 B. 0.2 g/cm3 C.500 g/cm3 D. 5,000 g/cm3