Quiz Review - Topic 2 - 7th Science

What is the charge of an electron?

• Positive

• Negative

• Neutral

• Proton

Tags

NGSS.MS-PS2-3

Which teacher gives the lease amount of homework on Thursday?

• Ms. Smith

• Mrs. Williams

• Ms. Jones

• Mrs. Brown

Which teacher(s) give(s) about 14 minutes of homework on Wednesday

• Ms. Smith

• Mrs. Williams

• Ms. Jones

• Mrs. Brown

The number of protons and electrons in an atom is always

• Equal

• Neutral

• Negligible

• Changing

Organize these atoms as either stable or isotopes (you are given the atomic number of the atom, so compare it to the periodic table)

Groups:

(a) Isotope

,

(b) Stable atom

• Calcium (Ca) 18

• Fluorine (Fl) 9

• Iron (Fe) 18

• Platinum (Pt) 78

• Cesium (Cs) 55

• Titanium (Ti) 34

• Neon (Ne) 9

Tags

NGSS.MS-PS1-1

Label the subatomic particles in this diagram

c

d

e

Proton

Neutrogen

Neutron

Electron

Isotope

Tags

NGSS.MS-PS1-1

A/an _______ of carbon has a different number of neutrons but the same number of protons and electrons as stable carbon.

What was the average yearly earnings in 2003?

• $3000

• $4500

• $1500

• $5000

_______ (an element on the periodic table) would have an atomic mass of 6.941.

If an element has 9 electrons orbiting its nucleus, it will have how many protons?

• 9

• 18

• 20

• There is no way to know