Science Study Guide

How many atoms of each element does CH4 have?

• 1 carbon atom and 4 hydrogen atoms
• 3 carbon atoms and 1 hydrogen atom
• 1 carbon atom and 3 hydrogen atoms
• 2 carbon atoms and 2 hydrogen atoms

When two clear solutions are mixed together, a clear solution with white powder at the bottom results. What has happened to cause this change?

• The solutions were not stored at the right temperature
• A chemical reaction has occurred creating a precipitate.

• The solutions were not mixed properly
• The container was not clean

Have a neutral charge or NO charge

• Neutrons

• Positive
• Charged
• Negative

The Atomic structure consists of 3 subatomic particles. What are they?

• photons, electrons, and positrons
• neutrons, protons, and photons
• electrons, positrons, and neutrinos
• protons, neutrons, and electrons

What is the chemical formula for the image above.

• Not provided
• NaCl
• CO2
• H2O

Vertical column in the periodic table of elements such as alkali metals or halogens. Elements in the same group share the same number of VALENCE ELECTRONS.

• Family
• Period
• Row
• Group

A horizontal row of elements in the periodic.

• group
• period
• column
• vertical

What is the range for acids?

• 1 to 8
• 7 to 14
• 0 to 6
• 2 to 10

What are stronger acids closer to?

• 2. Stronger bases
• 1. Neutral substances
• 0. Weaker bases
• 0

Weaker acids are to closer to?

• alkaline pH level of 14
• acidic pH level of 1
• basic pH level of 8
• neutral pH level of 7