Science Unit 1

Science Unit 1

Poll

Do you feel ready to take the Science Unit 1 Assessment?

• Yes

• No

• Maybe

Matter

• Remember, matter is anything that takes up space and has mass

• All matter is made of tiny particles called atoms

Multiple Choice

What is matter made up of?

• Mass

• Space

• Atoms

Atoms

• Atoms are composed of even smaller particles

• Neutrons (inside the nucleus)

• Electrons (around the edge)

• Protons (inside the nucleus)

Multiple Choice

What is the charge of a proton?

• positive

• negative

• neutral

Multiple Choice

What is the charge of an electron?

• positive

• negative

• neutral

Multiple Choice

What is the charge of a neutron?

• positive

• negative

• neutral

Molecules

• Any time two or more atoms come together, they form a molecule

Elements

• An element is a pure substance that is only made of one kind of atom

Multiple Select

Which is an element?

• Hydrogen

• Oxygen

• Carbon Dioxide

• Magnesium Sulfide

Compounds

• When molecules include different elements, they are called a compound.

• Ex. Carbon Monoxide (CO)

Multiple Select

Which is a compound?

• Hydrogen

• Oxygen

• Carbon Dioxide

• Magnesium Sulfide

Signs of a Chemical Reaction or Change

• Light created or heat created

• Change in smell

• Change in color

• Change in temperature

• Sound produced

• Gas created

• New substance formed

Signs of a Physical Change

• Change in size or shape. Change in state of matter. Reversible. No new substance formed!

Multiple Choice

Is burning a log in a fire a chemical or physical change?

• Physical

• Chemical

Multiple Choice

Is cutting a piece of bread in half a chemical or physical change?

• Physical

• Chemical

Multiple Choice

Is freezing water a chemical or physical change?

• Physical

• Chemical

Multiple Choice

Is mixing baking soda and vinegar chemical or physical change?

• Physical

• Chemical

Law of Conservation of Matter

• Matter is not created or destroyed in any chemical or physical change. 

  
  

• The same amount of matter exists before and after the change occurs 

Multiple Choice

When a log is burned, and turned into ashes is matter created or destroyed?

• Created

• Destroyed

• Neither created or destroyed

Multiple Choice

When water is boiled and turned into steam via evaporation matter created or destroyed?

• Created

• Destroyed

• Neither created or destroyed

Temperature Vs. Thermal Energy

• Temperature: the measure of how fast, on average, the particles in something are moving (size doesn't matter, heat does)

• Thermal Energy: a measure of the total kinetic and potential energy of all the particles in a substance (the bigger something is, the more thermal energy)

Multiple Choice

Which has the highest thermal energy?

• piece of paper

• cup of hot coffee

• large ice coffee

• huge iceberg

Multiple Choice

Which has the highest temperature?

• piece of paper

• cup of hot coffee

• large ice coffee

• huge iceberg

Potential Vs. Kinetic Energy

• Potential Energy: stored energy an object has because of its position or state

• Kinetic Energy: the energy of motion

Multiple Choice

A moving bike. Potential or kinetic?

• Potential

• Kinetic

Multiple Choice

A rock on top of a hill. Potential or kinetic?

• Potential

• Kinetic

Multiple Choice

A car parked. Potential or kinetic?

• Potential

• Kinetic

Heat Transfer

• Conduction: transferring through direction contact (like touching something)

• Convection: transferring through air or water

• Radiation: transferring through an open space

Multiple Choice

Holding ice in your hand and the ice melting

• Conduction

• Convection

• Radiation

Multiple Choice

A piece of meat thawing on the counter

• Conduction

• Convection

• Radiation

Multiple Choice

Heating food in a microwave

• Conduction

• Convection

• Radiation

Three States of Matter

• Solid: particles are tightly together, holds it shape, melts (turns into a liquid) when heated

• Liquid: particles are not as tight together, forms the shape of the container it is put into, turns into a gas when heated

• Gas: particles are very free flowing, fills the container it is put into

Multiple Choice

Fills the container

• Solid

• Liquid

• Gas

Multiple Choice

Holds its shape

• Solid

• Liquid

• Gas

Multiple Choice

Takes the shape of the container

• Solid

• Liquid

• Gas

Multiple Choice

Particles are packed tightly together

• Solid

• Liquid

• Gas

Multiple Choice

Particles are free flowing (very loose)

• Solid

• Liquid

• Gas

Poll

Ready for your assessment now?

• Yes- ready to get an A+++

• Yes!

• Absolutely!

• Do I have a choice?