Njsla Science Prep

Front

What are elements with seven valence electrons known for?

Back

They are highly reactive.

Tags

NGSS.MS-PS1-2

Front

What element has 11 protons and 1 valence electron, and how reactive is it?

Back

The element is sodium, and it is highly reactive.

Front

What do the arrows labeled III in an atomic diagram point to?

Back

Neutrons.

Front

What is the formula to calculate acceleration?

Back

Acceleration = Force / Mass.

Tags

NGSS.MS-PS2-2

Front

If a magnet exerts a force of 4N on a 0.04 kg ball bearing, what is the acceleration?

Back

100 m/s².

Tags

NGSS.MS-PS2-2

Front

What happens to the mass of a system when vinegar and baking soda are mixed?

Back

The mass is the same in both before and after mixing.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a valence electron?

Back

A valence electron is an electron in the outermost shell of an atom that can participate in chemical bonding.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is the difference between protons and neutrons?

Back

Protons are positively charged particles, while neutrons have no charge.

Front

What is the significance of an element's atomic number?

Back

The atomic number indicates the number of protons in an atom and defines the element.