Conservation of Matter 5-PS1-2

Grade 5 - NGSS - CA

The temperature at which a liquid boils

Boiling point

The temperature at which a liquid boils. Boiling point. The boiling point is the temperature at which a liquid turns into a gas.

A change that produces a new substance

Chemical change

A change that produces a new substance. Chemical change. A chemical change is when materials mix and make something new, like baking cookies.

The temperature at which a liquid changes to a solid

Freezing point

The temperature at which a liquid changes to a solid is called the freezing point. The freezing point is the temperature where a liquid becomes a solid, like when water turns into ice at 0C 32F.

States that mass cannot be created or destroyed in a chemical reaction

Law of conservation of mass

States that mass cannot be created or destroyed in a chemical reaction. Law of conservation of mass. In simple terms, the amount of stuff we start with in a reaction is the same as the amount of stuff we end with.

The amount of matter in an object

Mass

The amount of matter in an object. Mass. Mass is how much stuff is inside an object and doesn't change if the object moves to a different place.

The temperature at which a solid changes into a liquid

Melting point

The temperature at which a solid changes into a liquid is called the melting point. The melting point is when a solid gets warm enough to turn into a liquid.

A change in size, shape, or state but not in identity

Physical change

A change in size, shape, or state but not in identity. Physical change. A physical change is when something looks different, like melting ice, but it's still made of the same stuff.

The three forms of matter - solid, liquid, and gas

States of matter

The three forms of matter - solid, liquid, and gas. States of matter. States of matter are the different forms materials can take, depending on their shape and how tightly packed their particles are.

Measure of the force of gravity on an object

Weight

Measure of the force of gravity on an object. Weight. Weight is how heavy something is because of gravity pulling on it.