3 MP Benchmark Review

How are elements organized in the periodic table?

Choose the correct answer.

• by density and date of discovery

• by atomic mass and melting point

• by atomic number and properties

• • by abundance in nature and usefulness to humans

How do atoms of copper differ from atoms of aluminum?

Choose the correct answer.

• They are not pure substances.

• They have different chemical properties.

• They can be formed by physical changes.

• They are made up of more than one type of particle.

Tags

NGSS.MS-PS1-1

Which two elements are most likely to have similar physical properties?

Choose the correct answer.

• copper and zinc

• copper and silver

• cadmium and indium

• gallium and cadmium

Match the following

• physical property

• can be separated into smaller parts, but not by chemical means

• pure substance

• can be observed without changing the identity of the material

• element

• can be broken into smaller pieces, but only to a certain point

• atom

• can be separated into smaller parts, but only if chemically changed

Tags

NGSS.MS-PS1-5

Organize these options into the right categories

Groups:

(a) Can be broken into simpler substances

,

(b) Cannot be broken into simpler substances

• gold wire

• table salt

• Candle Wax

• lead weight

• water vapor

Tags

NGSS.MS-PS1-1

Select the correct button in the table to show whether each description describes elements in the same group or in different groups on the periodic table.

Groups:

(a) Same Group

,

(b) Different Group

• Element Numbers 50 and 51

• Two gasses that don't react with any other element

• Two elements with similar properties

• Two elements with different chemical properties

If you were to look at grains of table salt (sodium chloride, NaCl) with a magnifying glass, you would see that each grain is a little cube. Why are salt grains cubical?

• All extended structure compounds form cubes.

• Sodium and chlorine atoms both have cubical shapes.

• In the extended structure of NaCl, atoms are arranged in a cubical pattern.

• One particle of NaCl contains eight atoms, each at one of the corners of a cube.

Tags

NGSS.MS-PS1-1

A molecule of methanol is composed of carbon atoms connected to 3 hydrogen atoms and a hydroxide group. A hydroxide group is made up of an oxygen atom bonded to a hydrogen atom. How many different types of atoms make up one molecule of methanol?

• 3

• 4

• 5

• 6

Tags

NGSS.MS-PS1-1

Reactant A and reactant B react to form product C. What type of substance is product C?

Choose the correct answer.

• an atom

• a mixture

• an element

• a compound

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Polyvinyl chloride (PVC) is a polymer used to make water pipes and other products. Polymer molecules are made of groups of atoms that repeat many times in long chains, as shown in the formula.

Which circle, numbered starting from left to right, shows the repeating group of atoms that forms PVC?

Choose the correct answer.

• first circle

• • second circle

• third circle

• fourth circle

Tags

NGSS.MS-PS1-1