SMS 2nd 4.5 Test Review 2 (2024-2025)

Front

What is the correct count of atoms in 4HNO₃?

Back

4 hydrogen atoms, 4 nitrogen atoms, 12 oxygen atoms.

Front

What type of energy transformation occurs when a candle burns?

Back

Chemical energy is transformed into light and heat.

Front

What is an example of potential energy?

Back

A fully charged battery.

Front

Which elements are in the same period on the periodic table: Al, Si, P or Be, Mg, Ca?

Back

Al, Si, P are in the same period.

Front

What mistake did student 2 make when balancing her equation?

Back

The product should include 3Mg.

Front

Define chemical energy.

Back

Energy stored in the bonds of chemical compounds.

Front

What is potential energy?

Back

Energy stored in an object due to its position or state.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom; a compound is made of two or more different types of atoms chemically bonded.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.