Density and Mass

Endothermic Reaction

A chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

Compound

A substance formed when two or more different elements are chemically bonded together.

Weight

The force exerted by gravity on an object, which is proportional to its mass but varies with the strength of the gravitational field.

Matter

Anything that has mass and takes up space.

Physical Property

A characteristic of a substance that can be observed without changing its identity, such as color, melting point, or density.

Chemical Bond

The force that holds atoms together in a molecule or compound.

Chemical Property

A characteristic that can only be observed during a chemical reaction, such as flammability or reactivity with acid.

Chemistry

The scientific study of the properties, composition, and behavior of matter.

Substance

A form of matter that has a specific composition and distinct properties.

Homogeneous Mixture

A mixture in which the components are uniformly distributed and cannot be easily distinguished.

Thermal Energy

The total kinetic energy of all the particles in a substance, related to its temperature.

Mixture

A combination of two or more substances that are not chemically bonded.

Filtration

A method used to separate solids from liquids or gases using a filter medium that allows the fluid to pass but not the solid.

Chemical Change/Reaction

A process that involves the transformation of one or more substances into different substances, characterized by changes in chemical properties.

Magnetic Attraction

A method of separation that uses a magnet to attract magnetic materials away from non-magnetic materials.

Density

The mass per unit volume of a substance, calculated using the formula density = mass/volume.

Chemical Energy

The energy stored in the bonds of chemical compounds, which can be released or absorbed during a chemical reaction.

Volume

The amount of space that a substance occupies, measured in liters or cubic centimeters, using a graduated cylinder or measuring cup.

Atom

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

Physical Change

A change that affects one or more physical properties of a substance without altering its chemical composition, such as melting or boiling.

Mass

The amount of matter in an object, typically measured in grams or kilograms, using a balance.

Temperature

A measure of the average kinetic energy of the particles in a substance, indicating how hot or cold it is.

Exothermic Reaction

A chemical reaction that releases heat to its surroundings, resulting in an increase in temperature.

Law of Conservation of Mass

A principle stating that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Evaporation

The process by which liquid turns into vapor, often used to separate a dissolved solid from a liquid.

Distillation

A separation technique that involves heating a liquid to create vapor and then cooling the vapor to create a liquid.

Heterogeneous Mixture

A mixture in which the components are not uniformly distributed and can be easily distinguished.

Chemical Formula

A notation that uses chemical symbols to represent the composition of a compound.

Molecule

Two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Element

A pure substance that cannot be broken down into simpler substances by chemical means.

Internal Energy is called

Endothermic Energy

how do you find the volume of an object?

volume = length times width times height

matter is anything that takes up space and has color?

false it has mass and takes up space

a single kind of matter that is pure (has a specific makeup) is a_

substance

Combustion

is a chemical reaction that occurs when a substance reacts with oxygen, producing heat and light. This process typically results in the formation of carbon dioxide and water.

Heterogeneous

A mixture in which the components are not uniformly distributed and can be easily distinguished

Chemistry

the study of matter and how it takes up space

Atom

the most basic particle from which all elements are made

Mass is what unit?

Kilograms (kg)