The amount of matter in an object.

The amount of space an object takes up.

Matter can escape into the surrounding air.

Law of Conservation of Mass

Matter cannot be created or destroyed in a chemical reaction. The mass of the particles going in is equal to the mass coming out of the reaction.

Made of one type of material throughout (salt, sugar, baking soda, citric acid).

A blend of two or more substances.

When a substance breaks apart into particles too small to see and it mixes completely in another substance (example: sugar will dissolve completely in water).

Describes a material that can dissolve in a particular substance.

Describes a material that does not dissolve in something else (sand is insoluble).

A property of matter that compares mass to volume. The density of a substance remains the same no matter how much there is.

How a substance interacts with fire.

Cannot burn or is very difficult to burn.

The original substances you start with before the chemical reaction occurs.

The new substances that are produced from a chemical reaction.

Lowest point on the curved surface of a liquid in a container.

A molecule formed by the bonding of two hydrogen atoms with one oxygen atom. Water has a density of 1 g/mL.

When matter changes from one state (solid, liquid, gas) to another.

Phase change - Liquid to Gas; caused when particles in a substance are heated; particles gain energy and spread out (expand).

Phase change - Gas to Liquid; caused when particles in a substance cool; particles lose energy and move closer together (contract).

Phase change - Solid to Liquid; caused when particles in a substance are heated; particles gain energy and spread out (expand).

The use of electricity to separate a substance. • Adding electrical energy to water (liquid) formed a new substance (2 gasses)

A change in which the original properties or a substance do not change. • Ripping paper • Freezing/Melting/Boiling water (phase changes) • Cutting wood

A change in which a new substance is formed with properties different from the original reactants. • Cooking food • Burning a substance • Dyeing hair

smallest particles of matter; can't be divided or destroyed in chemical reactions or through phase changes

made of more than one atom connected together

A molecule that contains 2 or more DIFFERENT elements

Unit 1 - Chemical Reactions and Matter Flashcards

Student preview

34 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Observation

Back

Using our 5 senses to observe or study an object.

2.

FLASHCARD QUESTION

Front

Physical Properties

Back

A characteristic of a substance that doesn't change (mass, volume, odor, color, melting point).

3.

FLASHCARD QUESTION

Front

Matter

Back

Anything that has mass and takes up space.

4.

FLASHCARD QUESTION

Front

Solid

Back

A state of matter that has a definite mass, volume and keeps its shape. Particles are tightly packed together, vibrate in place, and have the least energy.

5.

FLASHCARD QUESTION

Front

Liquid

Back

A state of matter that has mass and volume, but takes the shape of its container. Particles have more energy than a solid and are able to flow past each other.

6.

FLASHCARD QUESTION

Front

Gas

Back

A state of matter in which particles are far apart, has mass, takes up space; no definite shape or volume. Gases have the most energy.

7.

FLASHCARD QUESTION

Front

States of Matter

Back

One of the distinct forms in which matter can exist (solid, liquid, gas).

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