Regents Chemistry Test Preparation Practice States Of Matter

In which 1.0-gram sample are the particles arranged in a crystal structure?*

(1) CaCl₂(s)

(2) C₂H₆(g)

(3) CH₃OH(ℓ)

(4) CaI₂(aq)

One mole of liquid water and one mole of solid water have different*

(1) masses

(2) properties

(3) empirical formulas

(4) gram-formula masses

Which sample of matter has a crystal structure?*

(1) Hg(ℓ)

(2) H₂O(ℓ)

(3) NaCl(s)

(4) CH₄(g)

At 1 atm, equal masses of H₂O(s), H₂O(ℓ), and H₂O(g) have*

(1) the same density

(2) the same distance between molecules

(3) different volumes

(4) different percent compositions

Some physical properties of two samples of iodine-127 at two different temperatures are shown in the table below.

states-of-matter fig: chem12014-exam_g1.png

These two samples are two different*

(1) mixtures

(2) substances

(3) phases of matter

(4) isotopes of iodine

A sample of CO₂(s) and a sample of CO₂(g) differ in their*

(1) chemical compositions

(2) empirical formulas

(3) molecular structures

(4) physical properties

Which sample of matter sublimes at room temperature and standard pressure?*

(1) Br₂(ℓ)

(2) Cl₂(g)

(3) CO₂(s)

(4) SO₂(aq)

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

(1) CO₂(aq)

(2) CO₂(g)

(3) CO₂(ℓ)

(4) CO₂(s)

Which particle diagram represents a sample of oxygen gas at STP?

(1)

states-of-matter fig: chem82019-exam_g037m1.png

(2)

states-of-matter fig: chem82019-exam_g037m2.png

(3)

states-of-matter fig: chem82019-exam_g037m3.png

(4)

states-of-matter fig: chem82019-exam_g037m4.png

Which particle model diagram represents xenon at STP?

states-of-matter fig: chem62019-exam_g4.png *

(1)

states-of-matter fig: chem62019-exam_g5.png

(2)

states-of-matter fig: chem62019-exam_g6.png

(3)

states-of-matter fig: chem62019-exam_g7.png

(4)

states-of-matter fig: chem62019-exam_g8.png

Base your answers to questions 11 on the information below and on your knowledge of chemistry.

A metal worker uses a cutting torch that operates by reacting acetylene gas, C₂H₂(g), with oxygen gas, O₂(g), as shown in the unbalanced equation below.

C₂H₂(g) + O₂(g) → CO₂(g) + H₂O(g) + heat

In your answer booklet, use the key to draw a particle model diagram to represent the phase of the O₂(g). Your response must include at least six molecules.*

Base your answers to questions 12 on the information below and on your knowledge of chemistry.

Starting as a solid, a sample of a molecular substance is heated, until the entire sample of the substance is a gas. The graph below represents the relationship between the temperature of the sample and the elapsed time.

states-of-matter fig: chem82018-exam_g9.png

Using the key below, draw a particle diagram to represent the sample during interval AB. Your response must include at least six molecules.

states-of-matter fig: chem82018-abkq62.png *

Base your answers to questions 13 on the information below and on your knowledge of chemistry.

In the late 1800s, Dmitri Mendeleev developed a periodic table of the elements known at that time. Based on the pattern in his periodic table, he was able to predict properties of some elements that had not yet been discovered. Information about two of these elements is shown in the table below.

states-of-matter fig: chem62018-exam_g25.png

Identify the phase of Ea at 310. K.*

Base your answers to questions 14 on the information below and on your knowledge of chemistry.

The table below contains selected information about chlorine and two compounds containing chlorine. One piece of information is missing for each of the substances in the table.

states-of-matter fig: chem82017-exam_g15.png

Identify the phase of the chlorine at STP.*

Base your answers to questions 15 on the information below and on your knowledge of chemistry.

A technician recorded data for two properties of Period 3 elements. The data are shown in the table below.

elements-in-the-periodic-table fig: chem62017-exam_g22.png

State the phase of chlorine at 281 K and 101.3 kPa.*