I am doing a science presentation. I have to have a question to research over. It’s over the Periodic Table of Elements. Please provide several options. Please make these not about mass number etc. Please provide questions that are researchable. If good answers are provided, I’ll mark brainliest.

What effect does the pH of water have on radish seed germination?

1 What is the universe made of?

2 How did life begin?

3 Are we alone in the universe?

4 What makes us human?

5 What is consciousness?

6 Why do we dream?

7 Why is there stuff?

8 Are there other universes?

9 Where do we put all the carbon?

10 How do we get more energy from the sun?

11 What’s so weird about prime numbers?

12 How do we beat bacteria?

13 Can computers keep getting faster?

14 Will we ever cure cancer?

15 When can I have a robot butler?

16 What’s at the bottom of the ocean?

17 What’s at the bottom of a black hole?

18 Can we live for ever?

19 How do we solve the population problem?

20 Is time travel possible?

21 What happens in the gray zone between solid and liquid?

22 What is matter made of?

23 Why is gravity so weird?

24 Why does time seem to flow only in one direction?

25 Where did all the antimatter go?

26 What happens in the gray zone between solid and liquid?

27 Can we find a unified theory of physics?

28 How did life evolve from nonliving matter?

29 What effect does the pH of water have on radish seed germination?

Step-by-step explanation:

please mark this answer as brainliest, thanks and give a 5 star rating

I don't know if my answers are good but here we go

Options:

What are the 3 thing that make up the periodic table?

How can we memorize the periodic table easily?

Why was Mendeleev's "Periodic Table" useful to scientists?

Why is the periodic table called like that?

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15