Chemistry flashcards 11/19

Front

Which of these best describes a neutron?

Back

It has no charge and about the same mass as a proton

Front

What characteristic of an element's atoms always determines the identity of the element?

Back

Number of protons

Front

Which characteristic of sodium is most closely related to its chemical reactivity?

Back

The 1 valence electron in each atom of sodium

Front

Properties of elements in Group 1

Back

They are solids at room temperature and highly reactive

Front

Beryllium has how many protons?

Back

4

Tags

NGSS.MS-PS1-1

Front

What part of the atom determines its identity?

Back

protons

Tags

NGSS.MS-PS1-1

Front

Which subatomic particle is negatively charged?

Back

Electron

Front

What is the center of an atom called and what is its electrical charge?

Back

Nucleus, positive

Front

If an element symbol has no subscript next to it, how many atoms of this element are in the chemical formula?

Back

1

Tags

NGSS.MS-PS1-1

Front

How many elements are in this chemical formula? NaOH

Back

3

Tags

NGSS.MS-PS1-1