Science Milestone Review

What is an example of a physical property?

• Density

• Color

• Solubility

• Reactivity

If two boys are pulling with the same amount of force, what will happen?

• They will not move at all.

• One boy will win and pull the other.

• They will move in the direction of the stronger boy.

• They will both fall over.

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NGSS.MS-PS2-2

What is a molecule?

• A single atom that cannot be broken down further.

• A group of two or more atoms bonded together.

• A type of chemical reaction between elements.

• A mixture of different substances without any bonding.

Tags

NGSS.MS-PS1-1

What is an atom?

• The smallest unit of an element that retains the properties of that element.

• A particle that is larger than a molecule.

• A type of chemical bond between two elements.

• A form of energy that can be converted into matter.

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NGSS.MS-PS1-1

What happens to the particles in a solid when it is heated?

• The particles gain energy and vibrate more, potentially changing to a liquid.

• The particles lose energy and move closer together.

• The particles remain stationary and do not change.

• The particles gain mass and become denser.

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What is the definition of mass?

• The amount of matter in an object, usually measured in grams or kilograms.

• The force exerted by gravity on an object.

• The volume of an object measured in liters or cubic meters.

• The density of an object calculated by mass divided by volume.

What type of charge does an ELECTRON have?

• positive

• neutral

• negative

• indeterminate

Tags

NGSS.MS-PS2-3

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What is the best way to measure the volume of a small rock?

• Displacement method using graduated cylinder

• Measuring the dimensions and calculating volume

• Weighing the rock and using density

• Submerging the rock in water without a cylinder

What is the definition of volume?

• The amount of space an object occupies, usually measured in liters or cubic centimeters.

• The weight of an object measured in grams or kilograms.

• The surface area of an object measured in square meters.

• The density of an object calculated by mass divided by volume.

What is the difference between a physical change and a chemical change?

• A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

• A physical change results in the formation of new substances, while a chemical change alters the form of a substance.

• Both physical and chemical changes do not affect the chemical composition of a substance.

• A physical change is reversible, while a chemical change is irreversible.