SNC1W Exam Review

A molecule of methane is composed of 1 atom of carbon and 4 atoms of hydrogen. What is the formula for methane?

• CaH4

• HgC4

• CaHg

• CH4

Which of the following is considered a community?

• all individuals of the same species living in an ecosystem.

• all organisms living in the same ecosystem

• the ability to maintain natural ecological conditions or processes without interruption, weakening, or loss of value.

Which is an example of a biotic factor?

• Sunlight

• Water

• Soil

• Grass

Which of the following spheres includes all life on Earth?

• Lithosphere

• Biosphere

• Hydrosphere

• Atmosphere

Which element has 2 electrons in its outer shell?

• Carbon

• Oxygen

• Neon

• Beryllium

Which of the following is used to measure electric potential difference

• Ohmmeter

• Ammeter

• Electric motor

• Voltmeter

In the nucleus of atoms we find:

• Only electrons

• Only protons

• Protons and electrons

• Protons and neutrons

Which of the following is not true?

• Atomic mass is the mass of protons and neutrons

• Atomic number is the number of protons

• The first element on the periodic table is hydrogen

• The atomic mass is the mass of the protons and the electrons

Which of the following is a compound?

• Sodium

• Chlorine

• Water

• oxygen

Which of the following is NOT one of the laws of electric charges?

• Opposite charges attract each other

• Objects with like charges repel

• Charged objects will attract neutral objects

• Charged objects will gain more protons and electrons