Chemistry Basics Quiz

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What is the primary focus of chemistry?

Study of physical forces and energy

Study of composition, structure, and properties of matter (correct)

Study of living organisms

Study of environmental impacts on ecosystems

Which statement accurately describes the scientific method?

It is a linear process that concludes after proving a hypothesis.

All hypotheses must be proven true for the method to be considered effective.

Scientists follow it strictly without deviation under any circumstances.

It involves making observations, proposing hypotheses, and performing experiments. (correct)

What is the SI unit for measuring mass?

Litre (L)

Kilogram (kg) (correct)

Milligram (mg)

Gram (g)

If a length measures 1 meter, how many centimeters is this equivalent to?

100cm Signup and view all the answers

What temperature corresponds to 0 degrees Celsius in Kelvin?

273 K Signup and view all the answers

Which prefix corresponds to the numerical value of $10^{-6}$?

Micro Signup and view all the answers

What is the numerical value represented by the prefix 'Tera'?

$10^{12}$ Signup and view all the answers

Which of the following statements about equalities between different unit systems is accurate?

They can vary slightly and are not exact. Signup and view all the answers

In terms of composition, which statement correctly describes pure substances?

They consist of only one type of particle. Signup and view all the answers

Which prefix signifies a value of $10^{-12}$?

Pico Signup and view all the answers

How many grams are in 2.5 kilograms?

2,500 g Signup and view all the answers

Which of the following represents a conversion from liters to quarts accurately?

1 liter = 1.06 qt Signup and view all the answers

What is the freezing point of water in the Kelvin system?

273.15 K Signup and view all the answers

In the calculation 3.76 × 0.5, how many significant figures should the result have?

2 significant figures Signup and view all the answers

Which of the following statements about significant figures is true?

All non-zero digits are significant. Signup and view all the answers

What is the process for converting Celsius to Kelvin?

Add 273 to the Celsius temperature Signup and view all the answers

Which type of energy is primarily associated with an object's position or composition?

Potential energy Signup and view all the answers

How many joules are equivalent to one calorie?

4.184 J Signup and view all the answers

If you have 13 grams of carbs, how many kilocalories does that provide?

52 kcal Signup and view all the answers

What is the SI unit for energy?

Joule Signup and view all the answers

Which group contains metals that react violently with water?

Group 1 (Alkali Metals) Signup and view all the answers

What characteristic is not typical of nonmetals?

Good conductivity of electricity Signup and view all the answers

Which particles contribute to the atomic mass of an atom?

Protons and neutrons Signup and view all the answers

Which statement accurately describes isotopes?

Atoms of the same element with different numbers of neutrons. Signup and view all the answers

What is the position of lanthanides in the periodic table?

Row 6 Signup and view all the answers

What characteristic distinguishes compounds from elements?

Compounds are formed by the combination of two or more substances. Signup and view all the answers

Which of the following describes a heterogeneous mixture?

The individual components can be easily identified. Signup and view all the answers

Which statement about solids is true?

They maintain a definite shape and volume with tightly packed particles. Signup and view all the answers

Which of the following is an example of a physical change?

Boiling water Signup and view all the answers

Which property indicates the ability of a substance to undergo chemical changes?

Chemical Properties Signup and view all the answers

What is the specific heat of water expressed in cal/g°C?

1 cal/g°C Signup and view all the answers

What is the heat of fusion defined as?

The heat required to melt 1 g of a solid Signup and view all the answers

How is heat calculated when considering phase changes?

Heat = mass × heat of fusion Signup and view all the answers

Which process describes a solid changing directly into a gas?

Sublimation Signup and view all the answers

What does the heat of vaporization refer to?

Heat absorbed to convert 1 g of liquid to gas Signup and view all the answers

What must happen to the charges in ionic compounds?

The charges must cancel out. Signup and view all the answers

What suffix is commonly used for negatively charged ions derived from a parent element?

-ide Signup and view all the answers

Which prefix indicates the presence of three atoms in a molecular compound?

tri- Signup and view all the answers

In naming a molecular compound, which of the following is true regarding the second element?

It has a numerical prefix and ends with the suffix 'ide'. Signup and view all the answers

What is the naming convention for metals that can have multiple oxidation states in ionic compounds?

Roman numerals are included to specify the charge. Signup and view all the answers

Which of the following ionic compounds includes sulfate?

SO₄²⁻ Signup and view all the answers

Which statement accurately describes a polar covalent bond?

It has a noticeable difference in electronegativity between 0.5 and 1.8. Signup and view all the answers

Which element can form bonds with more than 8 electrons?

Phosphorus Signup and view all the answers

What is the SI unit for volume?

Cubic Meter Signup and view all the answers

Which definition best describes electronegativity?

The ability to attract and hold electrons in a bond. Signup and view all the answers

Which statement correctly describes the Pauli Exclusion Principle?

Electrons in the same orbital must have opposite spins. Signup and view all the answers

What happens to atomic size as one moves down a group in the periodic table?

It increases. Signup and view all the answers

Which of the following statements about electron configurations is true?

The notation 1s22s22p6 represents a full outer shell in the first two periods. Signup and view all the answers

How does ionization energy change as you move across a period in the periodic table?