Introduction to Chemistry

Mr. Berlin's Chemistry.

What is matter?

Anything that has mass and volume.

Name 3 solids that are solid at room temperature.

brick, rock, bones.

Pure substances have a

unique set of chemical and physical set of properties.

What is a physical property?

Can be measured or observed without changing the identity or composition of a substance.

What are the 7 examples of a physical property?

density, hardness, taste, color, odor, melting point, mass.

What is a chemical property?

Indicates how a substance will react with other substances.

What is a chemical property?

only observed when the substance undergoes the chemical change.

Name the 7 physical properties of water.

colorless, odorless, liquid at room temperature, tasteless, freezing point 0C, bioling point 100F, flow.

What are the 2 chemical properties of water?

reacts with liquid and reacts with Baking Soda.

What is a physical change?

changing in apperance without changing composition.

What is the definition of a chemical change?

One or more substances reacting to form new substances with different chemical and physical properties

What are 3 examples of a chemical change?

rusting, decaying, digestion

paper burning is a…

a chemical change

Density is an example of…

a physical property of a substance

What is on the left side of the arrow in a chemical equation?

the reactant

pure substance always have uniform and…

composition.

Describe ice.

less dense, definite volume, indefinite shape.

Name 3 substances that stay liquid at room temperature.

soda, blood, water.

Name 3 substances that stay a gas at room temperature.

nitrogen, carbon monoxide, hellium.

What is the diffrence between a pure substance and a mixtures?

A pure substance hasn’t been mixed yet. A mixture has other elements or particles.

What is the diffrence between a compounds and an element?

A compound is formed when elements are chemically combined. An element is a pure substance on the periodic table.

What is a homogenous mixture?

stays the same within all parts of the mixture

What is a heterogenous mixture?

can be picked apart or seperated.

What is a mixture?

Two diffrent substances that can be physically mxed together.

What is energy?

anything that can do work or produce heat.

What is weight?

the force of gravity acting on a objects mass.

What is mass?

the amount of matter in an object.

What do solids have?

definite shape, definite shape, not compresable, high desnity.

What does a liquid have?

indefinite shape, definite volume, not compressible, less dense

What does a gas have?

definite shape, indefinite volume, compressible, low density