If all science were this easy, we'd have no reason to know who Neil DeGrasse Tyson is.
Dr. Eureka is a manual dexterity game designed to keep kids entertained, if the box art wasn't enough of a clue. The BGG community is wise in this case; the game is listed as being for ages eight and up, but the community vote is for age five and up, and they're probably right. If you like watching small children fumble objects all over the floor so you can feel more accomplished in life, they're definitely right.
You start with three test tubes, each holding three balls of a single color—red, purple, or green. A card is flipped over with a way of sorting the balls in the test tubes. There may be any number of balls in a given tube (up to the five they can hold); some cards have an empty tube on them. Your job is to figure out the most effective way to move the balls from tube to tube until they match the pattern on the card. The catch is that you have to tip one tube into another to move the balls. You can't move them with your hands. And if you drop a ball, you're out of the round. First person to complete the pattern wins the round, takes the card, and the first to five cards wins.
That's the whole game. Is it fun? Yeah. It's not going to amuse adults for more than a couple playthroughs against each other. Kids might get a kick out of it if they're at a level of coordination where this is a challenge, but a doable challenge. (Actually, by that standard, a lot of adults might like it too.) It's something you want to find for cheap and stick on a shelf if you know you have to deal with kids that like to constantly do things with their hands.
Score: Six Science Guys out of nine.