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1.27.T.TEST - Unit 1 Test - The Structure of Matter

Last updated 4 months ago

38 questions

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You may use the following resources on this test:
Unit 1 Notes - Digital or Print Out
ptable.com
Any handwritten notes and/or any digital notes
You may NOT use any past formatives or CK12.

Once you have completed the test, you are free to engage in any academic activities.

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Question 35

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Question 36

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Question 37

37.

MgCl2
Elements: _______ 
Atoms: _______ 

Question 38

38.

PCl5
Elements: _______ 
Atoms: _______ 

Chemistry is the study of

life

panda

koalas

matter

What is the atomic symbol for the element Oxygen?

O

Ox

Oy

Og

Which of the following elements is represented by the symbol Ag?

Gold

Aluminum

Silver

Argon

What atomic symbol is assigned to the element Hydrogen?

Hy

Hd

H

He

What does the atomic symbol 'Na' stand for?

Nickel

Sodium

Neon

Nitrogen

Which is an example of a compound?

Air

Iron (Fe)

Water (H2O)

What is a pure substance?

A substance that only exists in laboratories

A substance that cannot be broken down into simpler components

A mixture of two or more substances

A substance with impurities

Which of these is not a pure substance?

Sand

Gold

Oxygen

Carbon

A bottle of salad dressing must be shaken before it is poured onto a salad in order to evenly mix the particles. How can this salad dressing be classified? 

Colloid

Compound

Solution

Suspension

Which type of mixture demonstrates components that are visually distinct with different appearance and properties  throughout?

Heterogeneous mixture

Element

Chemical compound

Homogeneous mixture

In which type of mixture are the different components evenly distributed?

Element

Homogeneous mixture

Compound

Heterogeneous mixture

Which is a common solvent in everyday life?

Sugar

Salt

Water

Baking Soda

In a saltwater solution, what is the solute?

Salt

Neither salt nor water

Both salt and water

Water

In a saltwater solution, what is the solvent?

Salt

Neither salt nor water

Both salt and water

Water

Soda is an example of....

colloid

pure substance

solution

suspension

The best way to get the sugar out of a sugar-water solution is to ________. 

boil away the water

freeze the sugar water

use a magnet

pour the sugar water through a filter

Classify each substance as either heterogeneous or homogeneous. (Be sure to classify all 6 substances)

oil and water

lemonade, pulp-free

vinegar

Chocolate chip ice cream

steel

rice and beans

Heterogeneous

Homogeneous

The particles in this image would best be described as a(n):

mixture of elements

compound

element

The particles in this image would best be described as:

mixture of elements and compounds

mixture of elements

mixture of compounds

The particles in this image would best be described as:

mixture of compounds

mixture of elements and compounds

mixture of elements

What type of mixture is this?

Solution

Suspension

Colloid

Is this mixture homogeneous or heterogeneous? 

homogeneous

heterogeneous

Kool-Aid

jello

milk

Orange Juice with pulp

salt water

salad dressing

Solution

Colloid

Suspension

Tyndall effect is due to what phenomena?

Light scattering

Heat transfer

Gravity pull

Chemical reaction

Which solution does not show the Tyndall effect?

Suspension

Colloid

Solution

What is a mixture?

A combination of two or more substances that retain their individual properties

A substance with a fixed composition

A substance that cannot be separated into its components

A pure substance

What is a characteristic of a physical change in Chemistry?

Does not change the type of molecule.

Absorbs energy.

Creates a new substance.

Releases pollution.

Which is an example of a mixture?

Freezing water

Seawater

Oil

Heating sugar

Which phase change involves a substance going from a gas to a liquid?

Freezing

Melting

Condensation

Evaporation

What occurs when a solid undergoes sublimation?

No change occurs

It becomes a liquid

It becomes a gas

It becomes a plasma

What is required for a liquid to evaporate?

Cold energy

Radiation

Heat energy

No energy is needed

Which is not a phase change?

Vaporization

Melting

Friction

Freezing

Which state of matter has a definite shape and volume?

Plasma

Solid

Gas

Liquid

In which state of matter do particles have the most energy?

Liquid

Plasma

Solid

Gas

How many atoms are in one molecule of water (H2O)?

3

4

1

2

How many elements are in one molecule of CO2?

4

3

2

1