Chemistry Chapter 3, 4 and 5 Review

The density of tin is 7.3 g/cm³ and aluminum is 2.7 g/cm³. What is true about the density of a tin can that is coated with aluminum?

• Its density is 2.7 g/cm³.

• Its density is 7.3 g/cm³

• Its density is between 2.8 g/cm³ and 7.3 g/cm³.

• There is not enough information to determine the density of the block.

The chemical formula for the compound copper (II) sulfate is CuCO₃. What is most likely to be true about the properties of copper (II) carbonate, copper, carbon and oxygen?

• All four substances have similar properties.

• Copper (II) sulfate has properties very similar to those of copper.

• Copper (II) sulfate has properties very similar to those of oxygen.

• All four substances have different properties.

Tags

NGSS.HS-PS1-1

In the copper cycle experiment shown below, which statement is true according to the law of conservation of mass?

• The amount of copper at the beginning of the cycle is the same as the amount of copper at the end of the cycle.

• The amount of copper at the beginning of the cycle is greater than the amount of copper at the end of the cycle.

• The amount of copper at the beginning of the cycle is slightly less than the amount of copper at the end of the cycle

• The amount of copper at the beginning of the cycle is the same as the amount of copper at the end of the cycle, unless some is destroyed in the reaction.

Tags

NGSS.HS-PS1-7

Use a periodic table to answer the question. Which pairs of elements would you expect to have the most similar properties?

• Gold, Au and Calcium, Ca

• Gallium, Ga and Zinc, Zn

• Rubidium, Rb and Strontium, Sr

• Bromine, Br and Chlorine, Cl

Tags

NGSS.HS-PS1-1

Use a periodic table to answer the question. Which of these describes Selenium location on the periodic table?

• Group 6A, Period 4

• Group 4, Period 6A

• Group 1A, Period 3

• Group 16, Period 3

Tags

NGSS.HS-PS1-1

How many different elements are included in the compound CaCrO₄?

• 3

• 4

• 5

• 6

Tags

NGSS.MS-PS1-1

Which statement describes an electron?

• The dense, positively charged structure found in the center of the atom.

• A particle that does not have a charge found in the nucleus of an atom.

• A particle with a negative charge found outside the nucleus of an atom.

• A particle with a positive charge found in the nucleus of an atom.

Which statement describes the nucleus of an atom?

• The dense, positively charged structure found in the center of the atom.

• A particle that does not have a charge found in the nucleus of an atom.

• A particle with a negative charge found outside the nucleus of an atom.

• A particle with a positive charge found in the nucleus of an atom.

Tags

NGSS.HS-PS1-8

What experimental evidence supports a model of the atom that consists of electrons distributed in a “pudding” of positive charge?

• Atoms form compounds.

• Neutrons have similar masses to protons.

• Electrons can be removed from materials.

• Copper emits green light in a flame test.

In 1911, Ernest Rutherford shot alpha particles at a thin sheet of atoms. Most of the particles went through the sheet, while a small number bounced back. What did this experiment allow him to conclude about the nature of atoms?

• Electrons orbit at different distances from the nucleus, as in a solar system.

• Most of an atom must be empty space.

• Alpha particles must be very large.

• An alpha particle is composed of two protons and two neutrons.