PS.8 EOG Review 2

A pure substance...

• is an element or a compound
• is an element or a mixture
• is a compound or a mixture
• is a mixture

This picture represents which of the following?

• A single element

• Mixture of molecules

• mixture of atoms

• mixture of compounds

Tags

NGSS.MS-PS1-1

Structural differences between different chemicals can be represented in models of the particles. Which drawing BEST represents a compound?

• 
• 
• 
• 

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NGSS.MS-PS1-1

An example of a pure substance is

• gold

• salad

• sweet tea

• electron clouds

The basic building blocks of most of the matter around you.

• elements

• protons

• atoms

• electrons

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The center of an atom is called the

• proton

• electron

• neutron

• nucleus

protons are

• located in the nucleus and have a positive charge

• located in the nucleus and have a negative charge

• the most important part of an atom

• atoms

In an element

• there are many different substances

• the atoms are all the same

• the atoms are all different

• the electrons, protons and neutrons are located in the nucleus

Tags

NGSS.MS-PS1-1

Identify the heterogeneous mixture

• sweet tea

• salad

• jello

• gold

1 A substance made up of two or more chemically combined elements is —

• an element

• mixture

• compound

• solution

Tags

NGSS.MS-PS1-1