Science Chemistry Unit

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

What is the number of protons that the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

How many neutrons are in the atom "K"?

• 7

• 2

• 39

• 20

Most of the mass in an atom is concentrated in the...

• electrons
• nucleus
• protons
• empty space

Tags

NGSS.HS-PS1-8

"C" is the element symbol for which element?

• calcium
• carbon
• chlorine
• cadmium

You know a chemical reaction has occurred if

• there is a precipitate (solid formed)

• there is a color change.

• there is a temperature change.

• All of these answers are evidence.

Tags

NGSS.MS-PS1-2

If I gain electrons I become

• Positive because I've added to my atom
• negative because I've added electrons
• same because i'm balanced
• equal because now I have electrons

What is an atom which has gained or lost electrons called?

• isotope

• atom

• ion

• balanced

A row across the Periodic Table where each element has the same number of energy shells

• column
• family
• period

What are the three major categories used to classify elements on the periodic table?

• solids, liquids, gases

• groups, periods, sections

• neutrons, protons, electrons

• metal, non-metals, metalloids

Tags

NGSS.MS-PS1-1