Physical Sci.

Convert 15.7 mL to L

• 0.157 L
• 1.57 L
• 15.7 L
• 0.0157 L

Convert 25 kg to g

• 2500 g
• 25 g
• 2.5 kg
• 25000 g

Which type of graph is best used to show change over time?

• Histogram
• Pie chart
• Bar graph
• Line graph

1. True or False: When heating chemical in a test tube, point it away from all people

• True
• False

1. True or false: You do NOT have to tie back long hair when working with fire and chemicals

• True
• False

The atom pictured to the right is an atom of which element?

• Hydrogen
• Boron

• Nitrogen
• Oxygen

Tags

NGSS.MS-PS1-1

What two things do all members of the alkaline earth family (group 2) have in common?

• They are nonmetals and are nonreactive

• They are metals with two valence electrons

• They are nonmetals that are not very reactive

• They are metalloids with two valence electrons

Isotopes are two atoms that have the same _____________, but different ______________.

• same number of electrons; different number of protons
• same atomic mass; different atomic number
• same number of neutrons; different number of protons
• same number of protons; different number of neutrons

How many neutrons are in a neutral atom of Fluorine?

• 10
• 9
• 8
• 11

Which subatomic particle is used to identify an atom and is always equal to the atomic number?

• Proton
• Neutron
• Electron
• Nucleus