Properties and Changes Test Review OL

Properties and Changes Test Review OL

By

​I can demonstrate safe practices during lab and field investigations. 6.1(A)

What are the safe practices needed to use chemicals and fire and glassware safely?

Tie back long hair

Wear safety goggles

Listen to and follow instructions carefully

No horseplay or off-task behavior in the lab

Follow the lab procedures carefully​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

What should you do if there is lab equipment in the room when you enter?

• Do not touch anything.

• Start an independent experiment.

• Immediately start playing with everything.

Multiple Choice

Goggles are required when ...

• using equipment that gets hot

• mixing chemicals

• cutting or crushing materials

• all of these activities require goggles

Multiple Choice

Before using fire or chemicals you should...

• tie back long hair

• put on a lab apron

• put on safety goggles

• every answer is correct

I can identify different types of physical properties. 6.6(A)

Characteristics like:

Size

Density

State of matter

Color

Texture

Etc.​

​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

Identify which item below best completes the table.

• Glass Window

• Gold Ring

• Paper Bag

• Styrofoam Cup

Multiple Choice

Mass, relative density, solubility, color, texture, state of matter, conductivity, etc.

• Physical state
• Insulators
• Physical Properties 
• Inferences

Multiple Choice

Sulfur is considered:

• malleable

• brittle

• ductile

• a good conductor

Multiple Choice

ductile means...

• can be made into wire

• can be bent or hammered

• can light up a light bulb

• it's shiny

Multiple Choice

Substances that can be hammered into thin sheets are:

• metals

• nonmetals

• both metals and nonmetals

Multiple Choice

Which of the following is a physical characteristic of a metalloid?

• texture
• malleable
• brittle
• semi-conductor

Multiple Choice

What does luster mean?

• Breaks into pieces
• can be hammered into thin sheets
• No shine
• reflects light, shiny 

I can describe the properties of luster, conductivity, malleability and density. 6.6(A)

Luster = metals

Conductivity = metals

Semiconductor - metalloids​

Malleable - metals

Ductile - metals

Density - all materials​

Subject | Subject

Some text here about the topic of discussion

I can classify elements as metals, nonmetals, and metalloids based on their physical properties. 6.6(A)

Metals

Left side of table

More reactive

Malleable, ductile, good conductors

Shiny Luster​

Metalloids

Semiconductors

Stairstep

Not malleable, ductile

Brittle

Shiny Luster​

Nonmetals

Less reactive

Most are gases​

Brittle and Dull luster​

​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

Iron is a good conductor, malleable and magnetic. What type of element is Iron? 

• Metal
• Nonmetal
• Metalloid
• Pretty

Multiple Choice

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 

• Metal
• Nonmetal
• Metalloid
• Pretty

Multiple Choice

Which elements are found on the right side of The Periodic Table?

• Metals
• Nonmetals
• Metalloids
• Water

Multiple Choice

All of these properties describe metals except...

• malleable
• conductors
• brittle 
• shiny

Multiple Choice

Which element is a metalloid?

• Titanium
• Selenium
• Potassium
• Polonium

I can calculate the density of any shaped object. 6.6(B)

Mass - use balance in grams

Volume

l x w x h

water displacement

​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

Look at this image.  Which object has the LOWEST density in water? How? 

• The Ping Pong Ball because it floats to the top 
• The bolt because it has sunk to the bottom
• The soda cap because it is not just full of air like the Ping Pong ball

Multiple Choice

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Multiple Choice

If an object has a density of .6 g/mL and you put it into water, will it sink or float?  

• sink
• float

Multiple Choice

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Multiple Choice

Helium balloons rise on earth because

• helium is less dense than air
• helium is more dense than air
• helium is cooler than air
• helium is warmer than air

I can use density to identify an unknown substance. 6.6(B)

Density of an unknown can be measured by finding the mass and volume of the object and then calculating the density. This density can then be compared to the density of known objects (like minerals) to identify the density closest to the unknown object and try to infer the identity of the unknown specimen.

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

#13 Show all your work on your answer document. D=m/v

• 1 g/cm³

• 0.875 g/cm³

• 4 g/cm³

• 16 g/cm³

Multiple Choice

#14 Show all your work on your answer document. D=m/v

• 10 g/cm³

• 0.14 g/cm³

• 7 g/cm³

• 60 g/cm³

Multiple Choice

#17 Show all your work on your answer document. D=m/v

• 0.5 g/cm³

• 8 g/cm³

• 2 g/cm³

• 4 g/cm³

Multiple Choice

#19 Show all your work on your answer document. D=m/v

• 0.33 g/cm³

• 15 g/cm³

• 3 g/cm³

• 9 g/cm³

Multiple Choice

#12 Show all your work on your answer document. D=m/v

• 84 g/cm³

• 0.09 g/cm³

• 11.5 g/cm³

• 736 g/cm³

I can define a chemical change or reaction. 6.5(C)

Chemical changes cannot be reversed. They permanently change the substance. Compounds may be recombined or broken apart.

After a chemical change you have a completely new substance.​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

• Physical Change
• Chemical Change

Multiple Choice

• Physical Change
• Chemical Change

Multiple Choice

• Physical Change
• Chemical Change

Multiple Choice

The following are examples of evidence of a chemical reaction....

• ice melting into a liquid

• condensation

• endothermic reaction

• change in color, production of gas bubbles

Multiple Choice

When we combine baking soda and vinegar, it fizzes and eventually turn into a liquid. What is actually happening?

• baking soda melted into its liquid form

• baking soda combined with the vinegar produced a new substance

• evaporated into the air

I can identify several types of evidence of a chemical change. 6.5(C)

Color change

Odor given off

New substance made

Gas or bubbles

Light emitted (given off)​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

When two colorless liquids are mixed, a red precipitate forms.

Which statement below is FALSE?

• New chemical bonds were formed with different properties.

• A color change and precipitate forming is evidence a chemical reaction has occurred.

• A precipitate forming is NOT evidence of a chemical reaction.

Multiple Select

Identify ALL evidences of a chemical reaction.

• Change of state (liquid to gas)

• Color change

• Temperature change

• Tearing a paper

• Burning a paper

Multiple Choice

Which statement below describes a PHYSICAL change?

• Burning the crust of the bread when making toast.

• Placing waffles in the toaster and applying butter on it.

• Frying an egg to make an egg sandwich.

• Using a cookie cutter to make heart-shaped cookies.

Multiple Select

Select all the statements below that show evidence of a chemical change.

• Food that changes shape once you chew it in your mouth.

• A partially eaten apple that is left out and turns brown.

• Heating up sugar in a pan turning from white to brown to make caramel.

• A pile of ashes that form from burning paper.

​I can use evidence of a chemical change to identify that a new substance has formed, and identify the new substance. 6.5(C)

Chemical Changes rearrange atoms to form new compounds. The evidence of this is:

Gas released - bubbling or fizzing

Burning

Temperature increase or decrease

Smell or odor

Color change

Precipitate formed​

Light or sound released

Evidence of new substance like rust​

Subject | Subject

Some text here about the topic of discussion

Multiple Choice

Which of the following is not evidence of a chemical reaction?

• Formation of a precipitate
• Production of gas
• Change in temperature
• Change in state of matter

Multiple Choice

A chemical reaction is...

• when a substance is mixed with another substance
• when a substance undergoes a change to form a new substance
• when a substance is dissolved into another substance
• when a substance is heated or exposed to another substance

Multiple Choice

Four students performed four different investigations by combining different substances. Which of the observations is most indicative of a chemical reaction?

• investigation 1
• investigation 2
• investigation 3
• investigation 4

Multiple Choice

Which of the following is an example that includes evidence of a chemical reaction?

• A sample of zinc is placed in water and it settles to the bottom
• A solid block of ice is heated and it completely melts into a liquid. 
• Sugar that is burned gives off an odor and turns brown and then black.
• A tomato is placed into a blender and chopped up into smaller pieces.

Multiple Choice

Which is NOT an indication of a chemical change?

• temperature change
• formation of a precipitate
• shape change
• production of light