The Magpies recorded a 2-0 win at home to Jose Mourinho's side last weekend and deservedly collected three points from a difficult fixture, with Tottenham held to a goalless draw at Everton.
Now Newcastle travel to face Spurs at White Hart Lane on Sunday with Soldado aware that Alan Pardew's men will have momentum on their side.
"We watched their game against Chelsea," he said. "In the first half, they defended well and then attacked more in the second half. It was a good win for them. I'm sure it will be a good match on Sunday.
"I think Newcastle will be quite confident and it won't be an easy match for us."
Summer signing Soldado has yet to fully adapt to the Barclays Premier League but he has struck three match-winning penalties already this season.
Spurs have found it a challenge to break teams down at White Hart Lane as the majority of visitors look to shut up shop in an attempt to stifle the wealth of attacking options available to manager Andre Villas-Boas.
Soldado's late penalty winner against Hull in their last home game was such an occasion and, despite Spurs currently sitting in the top four, the former Valencia forward is taking nothing for granted.
"You don't focus on where teams are in the league, you just go out and give 100 per cent in every match," he said. "It doesn't matter where teams are in the league, they give everything. There are no easy matches in the Premier League.
"If we manage to win, we'll continue to make progress and build on the draw at Everton."