Quarter 1 Review

What cannot be broken down into other substances?

• Compound

• Solids

• Mixture

• Element

What is made up two or more elements that are chemically combined?

• Element

• Compound

• Mixture

• Solids

How many elements are represented in the compound?

Na₂CO₃

• 1

• 2

• 3

• 4

An element is made up of only one kind of _____.

• isotope

• atom

• plastic

• metal

This picture represents which of the following?

• element

• mixture of elements

• compound

• mixture of compounds

This picture represents which of the following?

• element

• mixture

• compound

Which example is a compound?

• N₂

• Cu

• O₂

• H₂O₂

What kind of pure substance forms when two elements chemically combine?

• an element

• a mixture

• a compound

• a solution

Which of the following represents an element?

• H₂O

• NaCl

• H₂

• CaCO₃

Represented by an unique chemical symbol

• Elements

• Compounds

• Both