BJU Science

10/18 Physical Science Review Time!!

by Ms. Cook

​(So you can be "out the gate" on your benchmark exam)

​Please watch the short video on the next page and pay special attention to....

​

• ​properties of elements in the same groups

• ​what all elements in the same period have in common

• ​what all elements in the same group have in common

• ​how the periodic table is arranged

• ​why the periodic table is important

Multiple Choice

What do groups on the periodic table have in common?

• Same number of valence electrons

• Same number of protons

• same number of energy levels/orbitals

• same atomic mass

Multiple Choice

What do periods on the periodic table have in common?

• Same number of valence electrons

• Same number of protons

• same number of energy levels/orbitals

• same atomic mass

Multiple Choice

What gives groups their similarities?

• their physical properties and reactivity

• their melting points and reactivity

• the physical properties and their melting points

• t

Next we will review some questions from our first Schoolnet Quiz​

​Good luck!!

Multiple Choice

What physical property is characteristic of all of the elements in the group located in the rightmost column of the periodic table?

• very high melting point 

• gas state at room temperature

• good conductor of electrical current 

• extremely brittle solid at room temperature

Multiple Choice

Elements in the same column of the periodic table of the elements all

• have the same number of protons.

• share the same atomic structure.

• have similar physical characteristics.

• share the same number of neutrons.

​Remember back to "Periodic Personalities"

Multiple Choice

The columns are organized to show the

• similarities of the reactivity in groups.

• number of neutrons in a column.

• sum of atomic weights per column.

• amount of radioactivity in each group.

Multiple Choice

Which chemical cannot be further broken down into other chemicals using ordinary laboratory processes?

• 1

• 2

• 3

• 4

Multiple Choice

Which is most likely to be a mixture?

• substance formed when one atom combines with another atom of the same element

• substance formed when one atom combines with an atom of another element

• solution formed when one substance chemically combines with another

• solution formed when one substance dissolves in another

Multiple Choice

An element, X, contains 14 protons, 15 neutrons, and 14 electrons. Which is most likely the same element as X?

• Element A: 13 protons, 15 neutrons, 14 electrons

• Element B: 14 protons, 14 neutrons, 14 electrons

• Element C: 15 protons, 14 neutrons, 15 electrons

​Other Physical Science Review Questions!

​Please do your best!

Multiple Choice

Which best represents a balanced equation?

 

2H₂ + O_{2 ->} 2H₂O

•  HgO -> Hg + O₂

• 2Fe + O₂ -> Fe₂O₃

•  

  2H₂ + O_{2 ->} 2H₂O

Multiple Choice

A student passes a magnet over 10 grams of a powder. Four grams of the powder stick to the magnet, while 6 grams do not. Which of these identifies the substance?

• element

• mixture

• compound

• solution

Multiple Choice

A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon dioxide provided evidence that

• only a physical change occurred.

• a chemical change occurred.

• only a loss of mass occurred.

• the formation of an element occurred.

Multiple Choice

What number and types of atoms occur in a formula unit of Ca(NO3)2?

• 1 carbon atom, 1 neon atom, and 6 oxygen atoms

• 1 calcium atom, 2 neon atoms, and 3 oxygen atoms

• 1 carbon atom, 1 nitrogen atom, and 3 oxygen atoms

• 1 calcium atom, 2 nitrogen atoms, and 6 oxygen atoms

Multiple Choice

Which of the following is an example of a compound?

• Copper

• iron

• carbon

• water

Multiple Choice

A chemist observed bubbling and fizzing after adding an acid solution to a white powdery substance in a beaker. Which of the following can be inferred?

• The acid boiled when poured into the beaker.

• The acid and powder formed a new product.

• A physical reaction produced a gas mixture.

• A reaction occurred that produced heat.

Multiple Choice

A beaker contains a sample of water with a mass of 325 grams. The water in the beaker is boiled and weighed again after it cools. The new mass of the water is 305 grams. In this example of the conservation of matter in physical changes,

• the mass is less after it cools because water has less mass as a gas.

• the mass of the water was 305 grams and the mass of the water vapor was 20 grams.

• the process of boiling destroyed 20 grams of the water and left 305 grams of water.

• the heat energy created by boiling water makes up the rest of the mass.

Multiple Choice

Structural differences between different chemicals can be represented in models of the particles. Which drawing BEST represents a compound?

• A

• B

• C

• D