#1KSA-Law of Conservation/States of Matter Characteristics

In which part of the model does the CHEMICAL CHANGE most likely occur?

• Area A

• Area B

• Area D

• Area E

Tags

NGSS.MS-PS1-2

Which TWO answers describe how do the substances at Area B and Area F of the model compare?

• They are different compounds.

• The kinetic energy is higher at B than F

• The kinetic energy is higher at F than B

• The substance at F is exactly the same as the substance at B

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which ONE answer best explains why the candle wax solidifies in AREA D?

• The PARTICLES speed up

• Kinetic energy is added

• Thermal energy is removed

• Particles stop moving

Tags

NGSS.MS-PS1-4

After a candle is placed inside a sealed container, it stopped burning.

Which answer BEST explains why the candle burns out within a few minutes of being placed in the container?

• The glass container absorbs the heat of the flame, causing the combustion reaction to slow and then stop completely.

• One of the substance needed for the reaction is no longer available, so the reaction stops.

• The energy released by the flame is trapped by the container, and it becomes too hot for the reaction to continue.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

After the candle flame went out inside the container, the teacher measured the mass of the container and candle together. She then measured the mass of the unburned part of the candle alone.

Which answer BEST describes the result of these measurements?

• The candle mass (by itself) had INCREASED, but the total mass (candle in container) overall had DECREASED.

• The candle mass (by itself) had DECREASED, but the total mass (candle in container) overall remained the SAME.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which LAW states that matter cannot be created, and it cannot be destroyed. Meaning the MASS at the beginning equals (=) MASS at the end of a reaction.

• Law of Gas Theory

• Hendrick's Law

• Law of Conservation of Mass

Tags

NGSS.MS-PS1-5

In science, MASS is measured in

• grams (g)

• pounds (lbs)

• kilometers (km)

• inches

Which is a characteristic property of metals?

• Good conductor of electricity.

• Low melting point.

• Brittle.

Which is an indication that a chemical reaction has occurred?

• Sugar dissolves in water.

• Formation of a gas.

• Ice melting.

Tags

NGSS.MS-PS1-2

Which is an indication that a Chemical Reaction has occurred?

• Icing melting.

• Color change in a solution.

• Can mold the shape of the substance.

Tags

NGSS.MS-PS1-2