Module 2 Test

Match the definition with the correct vocabulary term from the word bank.

• solution

• law that states that mass is neither created nor destroyed in a chemical reaction

• conservation of mass

• 1. a form of matter with a definite shape and volume

• 0. solid

• the grid organizing elements into periods and groups

• periodic table

• a homogeneous mixture

• 0. states of matter

• 1. three physical forms that describe the matter that exists on Earth

Tags

NGSS.MS-PS1-5

Select which one is true of chemical properties and physical properties.

• Chemical properties involve a substance's ability to undergo changes that transform it into different substances, while physical properties can be observed without changing the substance.

• Chemical properties can be observed without changing the substance, while physical properties involve a substance's ability to undergo changes that transform it into different substances.

• Both chemical and physical properties involve changes that transform substances into different substances.

• Neither chemical nor physical properties involve changes that transform substances into different substances.

Tags

NGSS.MS-PS1-1

Compare and contrast the terms substance and mixture. Both are kinds of matter. Which of the following statements is true?

• A substance cannot be separated into other substances by physical means.

• A mixture cannot be separated into other substances by physical means.

• Both substances and mixtures can be separated into other substances by physical means.

• Neither substances nor mixtures can be separated into other substances by physical means.

Sort each property as physical or chemical. Tell whether each physical property is extensive or intensive. Which of the following is a chemical property?

Groups:

(a) Chemical Property

,

(b) Intensive Physical Property

,

(c) Extensive Physical Property

• solid at room temperature

• colorless

• does not react with nitrogen

• melting point

• mass

• volume

• forms green carbonate when exposed to air

Which of the following substances are elements? Select all that apply. What are the remaining substances?

• ice

• sugar

• sodium chloride

• iron

• copper

Select the item that is an example of the term.

• aluminum

• homogeneous mixture

• sand

• element

• salt

• compound

• air

• heterogeneous mixture

What kinds of changes do these words indicate? Sort them as indicating either a physical change or a chemical change.Boil, freeze, condense, vaporize, crush - Physical change; Explode, corrode, tarnish, ferment, burn - Chemical change

Groups:

(a) Physical Change

,

(b) Chemical Change

• crush

• rust

• vaporize

• explode

• tarnish

• freeze

• boil

• ferment

• burn

• cut

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Identify each mixture as either homogeneous or heterogeneous.

• heterogeneous

• sidewalk pavement

• homogenous

• bowl of cereal

• heterogeneous

• a glass of soda

• homogenous

• sterling silver (copper and silver alloy)

• heterogeneous

• saline

Identify the technique you would use to separate two substances with different boiling points. Identify the technique you would use to separate sand from water.

• distillation

• filtration

• chromatography

If 2 g of element X combines with 7 g of element Y to form compound XY, how many grams of Y are needed to form compound XY₂?

• 14 g

• 7 g

• 21 g

• 28 g

Tags

NGSS.MS-PS1-5