Science Quiz Review

The words cloth, thread, and fiber can be used in the following sentence:

Cloth consists of threads which are made of fiber.
Use the the words molecules, atoms, and matter to complete the following sentence:
​ (a)   consists of ​ (b)   which are made of ​ (c)   .

• matter
• molecules
• atoms

Tags

NGSS.MS-PS1-1

Some common substances and their chemical formulas are listed in the chart below.

Which of these substances are elements?

Select TWO correct answers.

• hydrochloric acid

• Oxygen

• Helium

• Carbon Dioxide and Water

Tags

NGSS.MS-PS1-1

The diagram below shows three containers of gas.

Which list correctly describes the gases in containers R, S, and T?

a

b

c

Mixture

Compound

Element

Tags

NGSS.MS-PS1-1

Particle models of four different types of matter are shown in the diagram.
Identify which of the four models best represents a pure compound. Explain your answer and give a specific example of a compound.

Tags

NGSS.MS-PS1-1

Base your answers to the questions on the diagram and on your knowledge of science. The diagram represents a beaker containing sugar, water, and sand. The sugar is dissolved in the water, creating a solution. The sand has settled to the bottom of the beaker. Describe why the sugar-water solution is a mixture and describe one method to separate the sand from the other substances in the beaker.

Use The Periodic Table of the Elements and the information below to answer the following question(s).
A student analyzed the data that identified the properties of an unknown element, Element X, to determine if the element was a metal or a nonmetal.

Which word best describes the substance that is formed when Element X reacts with chlorine?

• compound

• element

• mixture

• solution

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Use the information below to answer the following question(s). Silver nitrate (AgNO3), a colorless powder, consists of the metallic element silver (Ag) and two non-metallic elements, nitrogen and oxygen (N and O). Silver nitrate mixed with water (H2O) forms a clear solution. When a piece of copper wire (Cu) is put into a silver nitrate solution, the clear solution turns blue. A silvery white substance forms on the wire and falls to the bottom of the solution. Which statement best explains why silver nitrate (AgNO3) is classified as a compound?

• Silver nitrate contains a metal.

• Silver nitrate chemically reacts with copper.

• Silver nitrate forms when three elements chemically combine.

• Silver nitrate forms a solution when mixed with water.

Tags

NGSS.MS-PS1-1

The table shows the number of each kind of atom that makes up one molecule of the compounds sucrose and ethanol. Which of the following is the same for both compounds?

• the mass of each molecule

• the length of each molecule

• the types of atoms in each molecule

• the number of atoms in each molecule

Tags

NGSS.MS-PS1-1

Use the information below to answer the question(s) below. Cotton is a plant product used to make fabric. Cotton is made of cellulose, a fiber not digestible by humans. Cellulose is composed of many sugar molecules bonded together into long chains. Each sugar molecule contains carbon, hydrogen, and oxygen atoms. When cotton fabric is washed, wrinkles often form. The clothing industry uses chemicals to manufacture some cotton fabrics that are wrinkle-free. Dyes are also added to color the cellulose fibers in cotton. A feature that is common to both cellulose and sugar is that both are

• magnetic

• elements

• compounds

• soluble in water

Tags

NGSS.MS-PS1-1

Steel is a metal that is made from iron and carbon. During the steel making process, iron and carbon are melted, blended together, and then allowed to harden into a solid. The iron and carbon do not chemically react with each other. After steel was made, 20 samples were taken from one piece and tested. Each sample contained 98% iron and 2% carbon. Which of the following terms best describes steel?

• A. element

• B. compound

• C. homogeneous mixture

• D. heterogeneous mixture