PHYSICAL SCIENCE CHEMISTRY REVIEW #1

All matter (daily) is made of ____.

• dust

• energy

• atoms

• electricity

Tags

NGSS.MS-PS1-1

All atoms have ____ part(s).

• 2

• 1

• 3

• 4

Tags

NGSS.MS-PS1-1

The center of all atoms has _____.

• a nucleus

• empty space

• electrons

• black hole

Tags

NGSS.MS-PS1-1

____ surround all atoms.

• protons

• electrons

• neutrons

• croutons

Tags

NGSS.MS-PS1-1

In atoms, protons have (a) ____ charge; neutrons have (a) ____ charge; and neutrons have (a) ____ charge.

• + , 0 , -

• - , + , 0

• 0 , - , +

• croutons

Tags

NGSS.MS-PS1-1

The 78 is the ____. It tells us the ____ in an atom of this element.

• atomic number , #protons and #electrons

• mass number , #protons and #electrons

• atomic number , #neutrons and #electrons

• mass number , #protons and #neutrons

Tags

NGSS.MS-PS1-1

The 195.085 is the ____. When rounded to 195, it tells us the ____ in an atom of this element.

• atomic number , #protons and #electrons

• mass number , #protons and #electrons

• atomic number , #neutrons and #electrons

• mass number , #protons and #neutrons

Tags

NGSS.MS-PS1-1

To find the average number of neutrons in an atom of this element we ____.

• add the atomic number and the mass number

• subtract the atomic number from the mass number

• multiply the atomic number by the mass number

• divide the mass number by the atomic number

The average number of neutrons in an atom of this element is ___. HINT: #n = A - Z

• 79

• 195

• 116

• 275

Tags

NGSS.MS-PS1-1

Substances that are made of different types of atoms that are bonded together are ____.

• ions

• mixtures

• compounds

• solutions

Tags

NGSS.MS-PS1-1