The smallest building block of matter

Chemistry Pre-Assessment Flashcards

1

Which particles have mass?

2

Who discovered the electron?

3

Which of these particles is negative?

4

What is the center of an atom called?

5

Who discovered the nucleus?

6

What is an atom?

7

Which of these particles is NOT found in the center of an atom?

8

Which of these particles is positive?

9

Where is the mass of an atom located?

10

In a neutral atom which particles are equal in number?

Chemistry Pre-Assessment