Studies Weekly Science Week 2

Studies Weekly Science Week 2

All About Matter

What is Matter?

• Matter is what everything is made of

• Matter has different properties (shape, size, color, texture)

• Can be solid, liquid, or gas

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Amounts of Matter

• More matter = higher density

• Less matter = lower density

• Depends on how the atoms are arranged

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Multiple Choice

What is everything made of?

• nucleus

• matter

• electron

Multiple Choice

A feather has less density than cheese because...

• there are more atoms in a feather

• there are fewer atoms cheese

• there are fewer atoms in a feather

Atoms

• Matter is made up of atoms

• Atoms are the smallest particle and cannot be divided

• Nucleus is the center of the atom. It is made up of protons and neutrons

• Electrons spin around the outside shell of the atom

Shells and Bonds

• Electrons spin around the atom in rings called shells

• The ring closest to the nucleus can hold two electrons

• different atoms have various layers of shells

• Different atoms join together by bonds

Multiple Choice

What is the smallest particle?

• atom

• density

• molecule

• bond

Multiple Choice

What is at the center of an atom?

• electron

• nucleus

• molecule

• shell

Multiple Choice

What spins outside of an atom?

• electron

• nucleus

• molecule

Elements

• About 100 elements make up everything in the world

• An element is pure (has all the same atoms)

• Example: Gold is an element that is made up of only gold atoms

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Multiple Choice

True or False: Gold is a pure element and is made up of only gold atoms.

• True

• False

Multiple Choice

About how many elements exist in the world?

• 10

• 100

• 250

• 1000

Molecules and compounds

• A molecule is a chain of more than 1 atom

• A compound is a chain of different types of atoms

• A molecule can link together and can be all the same element or have a different combination

Example: Water Molecule

• A water molecule is 2 Hydrogen and 1 Oxygen

• That's why it's called H2O

• Draw the diagram in your notes

Multiple Choice

A molecule is...

• only one atom

• a chain of more than one atom

• an electron bond in a shell

Multiple Choice

Water is represented by H2O because...

• it has 1 Hydrogen atom

• it has 2 Hydrogen atoms

• it has 2 Hydrogen atoms and 1 Oxygen atoms

• it has 2 Oxygen atoms

Mass, Volume, and Density

• Mass is the amount of matter in an object

• Volume is how much space matter takes up

• Density is how much mass is in a volume

• Even air has mass, volume, and density

Gravity and Weight

• Gravity pulls on objects because they have mass

• Objects have weight because of gravity

• An object can have the same mass, but different weight

• Example: If you weigh 100 pounds on Earth, you will weigh 17 pounds on the moon

Multiple Choice

Volume is...

• how much gravity pulls on an object

• how heavy an object is on Earth

• how much space matter takes up

Multiple Choice

Objects have weight because of...

• gravity

• volume

• molecules

• air

EPDs

• EPD is an E-ink

• Has black and white ink that is controlled by electric fields

• If they want black letters, they zap the black ink to the top

• separated by clear fluid in between

• used in screens for computers, cameras, e-books, and even wearable images

Multiple Choice

What separates the black and white E-ink?

• water

• light

• clear fluid

• electricity