What is meant by "The Law of Conservation of Matter?"

• The principal that says save resources and don't waste.

• The principal that says matter cannot be created or destroyed.

• The principal that says all objects have mass.

• 
  The principal that says objects are made of atoms so small they cannot be seen without aid.

Matter must have weight and _________.

• be visible
• take up space
• be a solid
• all of these

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

If 25 grams of sugar dissolves into 150 grams of water, what is the new weight of the liquid?

• 125 g
• 150 g
• 25 g
• 175 g

Tags

NGSS.5-PS1-2

What evidence was found for conservation of matter in the fire snake demo?

• looked the same before and after
• about the same weight before and after
• smelled the same before and after
• matter was not conserved

Tags

NGSS.5-PS1-2

The fire snake weighed slightly less after it burned. Where did that matter go?

• disappeared
• burned up
• escaped as gas
• soaked into sand

Tags

NGSS.5-PS1-2

Why does the weight of the dry ice go down while it's sitting on the scale?

• it's melting
• it's disappearing
• turning into a gas
• none of these

Tags

NGSS.5-PS1-2

Why does matter weigh less after a chemical reaction?

• Some matter changed form and evaporated as a gas.

• The matter was destroyed and no longer exists.

• Some matter is lighter when mixed together.

• Some chemical changes cause molecules to weigh less.

As the balloon collects gas, what happens to the weight reading on the scale?

• increases
• decreases
• stays the same
• goes to zero

Tags

NGSS.5-PS1-2

As this candle burns it gets shorter. Where does the wax go?

• wax goes into the air
• disappears
• melts into the candle
• burns and releases gases into the air

Tags

NGSS.MS-PS1-4

What makes cinnamon rolls get bigger when you bake them?

• more matter
• gas bubbles get smaller
• more energy
• gas bubbles get larger

Tags

NGSS.MS-PS1-4