CA1 Review

CA1 Review

by Cynthia Roman

Elements

​Pure substances that CANNOT be separated into a smaller substance

​

​They are located on the periodic table

​

Multiple Choice

Which of the following represents an element?

Multiple Choice

Which of the following represents an element?

• He

• NaCl

• $$H_20$$  

​Compounds

​Made up of two or more different elements that are bonded together

​

​Compounds can be separated into a simpler substance

Multiple Choice

Which of the following is true about a compound?

• Compounds can be dissolved

• Compounds can be broken down into simpler substances

• Compounds are the same as elements

• Compounds go through evaporation

Multiple Choice

Which of the following represents a compound?

• Au

• C

• $$CO_2$$  

• Fe

Poll

What should you look for when identifying the different elements in a compound?

• All the letters

• The chemical symbol

• The numbers

• The capitol letters

Multiple Choice

Which compound does not include Carbon (C)?

• $$CO_2$$  

• $$NaHCa$$  

• $$C_2H_5$$  

Multiple Choice

Which of the following is a chemical change?

• Boiling water

• Crushing a can

• Dissolving salt and water

• Burning paper

Fill in the Blank

The following picture is an example of a ______________ change.

Multiple Choice

What is it called when two liquids mixed together start to form a solid?

• Precipitate

• Temperature change

• Color Change

• Mass

Multiple Choice

Which of the following is an example of a physical change?

• Rusting

• Boiling

• Digestion

• Tarnishing

Multiple Choice

Which of the following represents an element?

• H₂O

• NaCl

• H₂

• CaCO₃

Multiple Choice

Which of the following is not a compound?

• HCl

• NaCl

• Cl

• CO₂

Multiple Choice

Salt has a chemical formula of NaCl. Salt is a...

• Compound

• Mixture

• Element

• None of the Above

Multiple Choice

What cannot be broken down into other substances?

• Compound

• Solids

• Mixture

• Element

Multiple Choice

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

• Element

• Compound

• Mixture

• Solids

Multiple Choice

How many elements are represented in the compound?

Na₂CO₃

• 1

• 2

• 3

• 4

Multiple Choice

What is H₂SO₄

made up of?

• 2 hydrogen, 1 sulfur, 4 oxygen

• 2 hydrogen & 4 sodium

• 1 hydrogen, 2 sulfur, 4 oxygen

• 1 hydrogen & 6 sodium

Multiple Choice

This picture represents which of the following?

• element

• mixture of elements

• compound

• mixture of compounds

Multiple Choice

This picture represents which of the following?

• element

• mixture

• compound

Multiple Choice

What is the picture displayed?

• atom

• molecule

• element

• compound

Multiple Choice

In this diagram, X represents...

• A compound

• An atom

• A mixture

• An element

Multiple Choice

In this diagram, Y represents...

• An element

• A compound

• A molecule

• A mixture

Multiple Choice

Which example is a compound?

• N₂

• Cu

• O₂

• H₂O₂

Multiple Choice

Are there any compounds on the periodic table?

• Yes,there are many.

• No,because only elements are on the periodic table.

Multiple Choice

Ice melting

• Chemical Change
• Physical Change

Multiple Choice

Wood burned in a fireplace

• Chemical Change
• Physical Change

Multiple Choice

Cake batter baked in an oven

• Chemical Change
• Physical Change

Multiple Choice

Baking soda and vinegar combine to make carbon dioxide

• Chemical Change
• Physical Change

Multiple Choice

Glass bottle that is shattered

• Chemical Change
• Physical Change

Multiple Choice

Copper roof changing color

• Chemical Change
• Physical Change

Multiple Choice

Shredding a piece of paper

• Chemical Change
• Physical Change

Multiple Choice

What happens in ALL chemical changes?

• Change in state of matter
• A new substance is formed
• Bubbles are produced
• An explosion

Multiple Choice

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Multiple Choice

What happens in a chemical change?

• The atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed.

• When objects or substances undergo a change that does not change into a different substance.

Multiple Choice

What happens in a physical change?

• The atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed.

• When objects or substances undergo a change that does not change into a different substance.

Multiple Choice

Which type of change can be undone?

• Chemical

• Physical

Multiple Select

Which are clues that a chemical change has taken place?

• Change in temperature

• The color changes

• The odor or smell changes

• Formation of a precipatate

• You see bubbles form