Reteach and Remediate: Matter/Energy

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a type of mixture where the components are not uniformly distributed, and different substances can be seen. An example is a salad.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout. An example is saltwater.

Front

How do you calculate density?

Back

Front

What is the density of an object with a mass of 14g and a volume of 2cm³?

Back

The density is 7 g/cm³.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting and freezing.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include rusting and burning.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat. This can be observed when the temperature of the surroundings increases.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, resulting in a decrease in temperature.

Front

What elements typically form ionic bonds?

Back

Ionic bonds are typically formed between metals and nonmetals.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons, usually between nonmetals.