1.1 States and Purity of Matter

Multiple Choice

The word "atomos" means

• Indivisible

• Can be destroyed

• Huge

Multiple Choice

He said that matter is composed of FOUR elements

• John Dalton

• Aristotle

• Democritus

Multiple Choice

He developed the atomic theory

• Democritus

• John Dalton

• Aristotle

​Law of Conservation of Mass

​Law of Conservation of Mass states that atoms cannot be created or destroyed during chemical reactions, they can only rearrange with other atoms.

Multiple Choice

Which of the following is not included in Aristotle's idea of elements?

• Fire

• Wind

• Rock

Multiple Choice

He stated that "no atom is created or destroyed"

• Aristotle

• Democritus

• John Dalton

Multiple Choice

Which of the following is not a state of Matter?

• Solid

• Plasma

• Liquid

• Powder

Multiple Choice

Which state of matter has a definite volume or size and a distinct shape at a given temperature?

• liquid

• gas

• solid

• all of the above

Multiple Choice

Which state of matter has a definite volume, but it takes the shape of its container with the help of gravity?

• solid

• liquid

• gas

• all of the above

Multiple Choice

Which of the following material that does not belong to the group?

• ruler

• soy sauce

• eraser

• sharpener

Multiple Select

What are the states of matter?

• solid, liquid, and juice

• solid and gas

• solid and liquid

• solid, liquid, and gas

Multiple Choice

Some scientists consider _________ as the fourth state of matter.

• plasma

• solid

• liquid

• gas

Explanation Slide...

Now think about the water in your water bottle. If you poured the water into a bowl, would the volume change? Would the shape change?

Multiple Choice

A state of matter that has no definite shape but has a definite volume.

• states of matter

• Solid

• Liquid

• Gas

• Temperature

Explanation Slide...

Ever played with the toy shown in the image? What will happen as the ball on the right moves to the left?

Multiple Choice

the energy an object has due to its motion

• potential energy

• Kinetic energy

• Thermal Energy

• Melting

• Freezing

Explanation Slide...

You don't feel it, but air molecules are constantly ramming into you. This is because they are in constant random motion and have kinetic energy!

Multiple Choice

the measure of the average kinetic energy of a substance

• Temperature

• Kinetic energy

• Potential energy

• Melting Point

• Freezing Point

Multiple Choice

Which state of matter has particles that are tightly packed?

• liquid

• gas

• solid

Multiple Choice

How would you describe the way molecules move when the molecules are solid?

• the molecules are moving in place.

• the molecules are moving around each other.

• the molecules are moving away from each other.

• the molecules are not moving

Multiple Choice

Which of these is the right word for the process of turning a solid into a liquid?

• Boiling

• Melting

• Condensing

• Evaporating

Multiple Choice

The state of matter depends on its

• volume

• temperature

• weight

• mass

Multiple Choice

How do we call the change of matter form liquid to solid?

• Vaporization

• Condensation

• Freezing

• Melting

Multiple Choice

Freezing and melting point of water 

• 0 degree Celsius

• 100 degree Celsius

Multiple Select

Boiling point of water

• 0 degree Celsius

• 100 degree Celsius

Multiple Choice

When a solid changes into a liquid it is called

• Melting

• Sublimation

• Condensation

• Freezing

Multiple Choice

The moisture you see on the mirror in your bathroom after a hot shower is called _____.

• Melting

• Sublimation

• Condensation

• Vaporization

Multiple Choice

Solid changing into a gas is called ______.

• Vaporization

• Sublimation

• Condensation

• Melting

Multiple Choice

When you melt a solid it turns into a ____

• Solid

• Liquid

• Gas

Multiple Choice

Both elements and compounds are pure substances. 

• AGREE

• DISAGREE

Multiple Choice

Two or more different elements chemically combined to form compounds.

• AGREE

• DISAGREE

Multiple Choice

NaCl or table salt is an example of a compound that contains helium and oxygen.

• AGREE

• DISAGREE

Multiple Choice

How many elements are there in the modern periodic table?

• 100

• 120

• 11

• 118

Multiple Choice

Which of these is a compound?

• Aluminium (Al)

• Carbon Dioxide (CO2)

• Nitrogen (N)

• Sand

Multiple Choice

What are the two types of Mixtures

• Elements and Subatomic Particles

• Protons and Electrons

• Atoms and Compounds

• Homogenous and Heterogeneous

Multiple Choice

In which mixture can you not see all of the parts?

• homogeneous

• heterogeneous

Multiple Choice

In which mixture can you see all of the parts?

• homogeneous

• heterogeneous

Multiple Choice

An example of a solution is...

• the mixture of oil and water

• the mixture of salt and water

• the mixture of milk and cereals

Multiple Choice

A solution is an homogeneous mixtures where one of the component is...

• a gas

• a liquid

• a metal

Multiple Choice

Substances that are made up of ONLY one type of atom (element) or compound.

• Heterogeneous mixture

• Pure substance

• Suspension

• Homogeneous mixture

Multiple Choice

Which of the following is classified as a pure substance?

• Lemonade

• Fruit punch

• ketchup

• Hydrogen

Multiple Choice

Heterogeneous mixture

• A mixture with a composition that varies from point to point

• A mixture with a uniform composition and appears visually the same throughout

Multiple Choice

two or more atoms bonded together is...

• an element

• a big atom

• a molecule

• a mixture

Multiple Choice

An element is?

• Chemically combined

• Pure substances that can be broken down

• Pure substances that cannot be broken down into simpler substances

• One or more elements chemically combined.

Multiple Choice

Oxygen

• Element

• Compound

Multiple Choice

Water

• Element

• Compound

Multiple Choice

Sand

• Mixture

• Compound

Explanation Slide...

Red+Green = CompoundDiatomic Red = ElementThe two types are sharing the same space, therefore this is a mixture.

Multiple Choice

What does this illustrate

• Elements

• Compunds

• Mixture of Elements and Compunds

• Mixture of Compounds

Explanation Slide...

Air is a mixture

Multiple Choice

Air is a(n) _________. 

• element 

• mixture 

• compound 

Multiple Choice

This diagram represents a _____.

• pure substance that is a compound

• mixture of elements

• pure substance that is an element

• mixture of compounds

Multiple Choice

Classify the picture with the correct label.

• Element

• Compound

• Mixture of Elements & Compounds

• Mixture of Compounds

Multiple Choice

A 24 carat gold bar is an example of an element. This means it is made of...

• Only one atom

• Only gold atoms

• Only two different atoms

• A mixture of atoms

Multiple Select

Which two of these are elements?

• Water (H₂O)

• Hydrogen (H₂)

• Salt 🧂 (NaCl)

• Iron (Fe)

• Carbon dioxide (CO₂)

Match

Match the following

single element

single compound

mixture of elements

mixture of compounds

mixture of elements and compounds

• single element

• single compound

• mixture of elements

• mixture of compounds

• mixture of elements and compounds