Review for semester test 2024 Part 2 Live

Front

What happens when ice cubes melt in a glass?

Back

Heat is transferred from the warmer water to the ice cubes.

Front

Which statement is true about the following compounds: C6H12O6, C3H6O3, C6H8O6?

Back

Compound 1 contains twice the amount of total atoms as Compound 2.

Front

Which line shows a faster speed: Dotted line or solid line?

Back

Dotted line.

Front

What appears on the left side of a chemical formula and represents how many molecules there are?

Back

The coefficient.

Front

How many atoms of each element are in baking soda (NaHCO3)?

Back

1 Sodium atom, 1 Hydrogen atom, 1 Carbon atom, 3 Oxygen atoms.

Front

What is the definition of a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules of that substance are present.

Front

What is the process of heat transfer from a warmer object to a cooler object called?

Back

Conduction.

Front

What is the chemical formula for glucose?

Back

C6H12O6.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.