Can't Figure Out Error Message In SQL

Can someone please look at my stored procedure? I am trying to create the following stored procedure, but get the following error
messages:

Msg 102, Level 15, State 1, Procedure InsertWork, Line 3
Incorrect syntax near '7'.
Msg 102, Level 15, State 1, Procedure InsertWork, Line 25
Incorrect syntax near '@7am8am'.

USE [Work]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[InsertWork]
(
  7am8am       nvarchar(500),
  8am9am       nvarchar(500),
  9am10am       nvarchar(500),
  10am11am      nvarchar(500),  
                11am12noon    nvarchar(500),
                12Noon1pm     nvarchar(500),
  1pm2pm       nvarchar(500),
  2pm3pm       nvarchar(500),
  3pm4pm        nvarchar(500),
  4pm5pm       nvarchar(500),  
                5pm6pm       nvarchar(500),
  6pm7pm       nvarchar(500),
  7pm8pm       nvarchar(500),
  8pm9pm        nvarchar(500),
  9pm10pm       nvarchar(500),  
                10pm11pm      nvarchar(500),
  Notes         nvarchar(500),
         Date           nvarchar(15)
)
AS BEGIN
 INSERT INTO WorkDay
 VALUES
                @7am8am,
                @8am9am,
  @9am10am,
  @10am11am, 
  @11am12Noon,
  @12Noon1pm,
  @1pm2pm,
  @2pm3pm,
  @3pm4pm,
  @4pm5pm,
  @5pm6pm,
  @6pm7pm,
  @7pm8pm,
  @8pm9pm,
  @9pm10pm,
  @10pm11pm,
  @Notes,
  @Date
END