Chemistry Regents Review - Matter

Which pair is classified as a substance?

• 1) compounds and mixtures

• 2) elements and compounds

• 3) elements and solutions

• 4) elements and mixtures

The particle diagram in the picture represents a sample of matter. Which best describes the composition of the sample?

• 1) a mixture of elements

• 2) a single compound

• 3) a single element

• 4) a mixture of compounds

Tags

NGSS.MS-PS1-1

Which formula represents a mixture?

• 1) NH3(g)

• 2) NH3(s)

• 3) NH3(aq)

• 4) NH3(l)

Which substance can not be decomposed by a chemical change?

• 1) carbon monoxide (CO)

• 2) carbon dioxide (CO2)

• 3) methane (CH4)

• 4) carbon (C)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a chemical property of copper?

• 1) It is a good conductor of heat and electricity.

• 2) It reacts in moist air to produce green copper carbonate.

• 3) It has a shiny metallic luster.

• 4) It melts when heated to 1083 Degrees C

Tags

NGSS.HS-PS1-1

The particle diagrams below represent elements at STP.Which particle diagram best represents a substance in the solid state?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Samples of SO2(g) and N2(g) contain equal numbers of molecules. If the gases are at STP, the samples have

• 1) the same density

• 2) equal volumes

• 3) equal numbers of atoms

• 4) the same molecular mass

Which pair represents two forms of an element in the same phase at STP but with different structures and different properties?

• 1) I2(s) and I2(g)

• 2) O2(g) and O3(g)

• 3) H2(g) and Hg(g)

• 4) H2O(s) and H2O(ℓ)

Which sample of matter is classified as a substance?

• 1) air

• 2) milk

• 3) carbondioxide

• 4) seawater

Which sample of CO2 has a indefinite shape and a definite volume?

• 1) CO2(aq)

• 2) CO2(g)

• 3) CO2(s)

• 4) CO2(ℓ)