Question

1. which of the following elements would most likely be a shiny, gray - colored solid at room temperature, conduct electricity and dent when hit with a hammer

a. aluminum
b. argon
c. chlorine
d. sulfur

1. which statement correctly describes protons and electrons

a. they have the same mass and the same electrical charge
b. they have the same mass but different electrical charge
c. the have different mass but same electrical charge
d. they have different mass and different electrical charge

1. electrons are found in the __________ of the atom

a. nucleus
b. hard core
c. orbitals
d. protons
use the table below for questions 23 - 25
data table

substance	number of protons	number of electrons
fluorine	9	10
potassium	19	19
sulfur	16	18

1. which element is electrically neutral (no charge)

a. lithium
b. fluorine
c. potassium
d. sulfur

Explanation:

1. Aluminum is a metal with described properties.
2. Protons are positively - charged and heavier; electrons are negatively - charged and lighter.
3. Electrons are in orbitals around the nucleus.
4. Lithium has equal number of protons and electrons, making it neutral.

Answer:

1. a. aluminum
2. d. They have different mass and different electrical charge
3. c. orbitals
4. a. lithium