CJSJ 5TH GRADE MIXTURES & SOLUTIONS REVIEW

​ (a)   is a process where a set of substances undergo a chemical change to form a different substance.

• Chemical reaction

• Physical change

Answer explanation

A chemical reaction is a process where substances interact and transform into new substances, which aligns with the definition provided. In contrast, a physical change does not result in new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The main forms matter can exit in solids liquids, gases and in rare cases plasma. ​ (a)  

• States of Matter

• Matter infustion

Answer explanation

The correct answer is 'States of Matter' as it refers to the distinct forms that different phases of matter take, including solids, liquids, gases, and plasma.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When water evaporates from a salt solution and the salt is dried and l​eft behind, what shape is the

salt partical? ​ (a)  

• square

• round

Answer explanation

When water evaporates from a salt solution, the salt crystals that remain typically form in a cubic shape, which can appear square. Therefore, the correct answer is square.

​ (a)   a characteristic of an object, something you can observe such as size, color, shape, or texture

• Property

• Attribute

Answer explanation

The correct answer is 'Property' because it refers to a characteristic of an object that can be observed, such as size, color, shape, or texture. 'Attribute' is similar but is often used in different contexts.

Tags

NGSS.2-PS1-1

NGSS.2-PS1-2

How can you tell a substance has dissolved?​ ​ (a)  

• It seems to have dissapeared into the liquid.

• It has many floating particles in the liquid.

Answer explanation

A substance is considered dissolved when it seems to have disappeared into the liquid, indicating that it has mixed uniformly at the molecular level. Floating particles suggest it has not fully dissolved.

What is the term describing the maximum amount of dissolved solute but you still can see the solute floating around in the container and on the bottom of the container ?

• A saturated solution

• solution

• Mixture

• Soluable

Answer explanation

A saturated solution is the term used when the maximum amount of solute has dissolved, yet some solute remains visible, either floating or settled at the bottom. This distinguishes it from a complete solution where all solute is dissolved.

How do you make a solution weaker?​ (a)  

• add more liquid

• add more solute

Answer explanation

To make a solution weaker, you add more liquid. This dilutes the concentration of the solute, resulting in a less concentrated solution. Adding more solute would actually make the solution stronger.

How do you make a solution stronger?​ (a)  

• add more solute

• add more solvent

Answer explanation

To make a solution stronger, you need to add more solute. This increases the concentration of the solute in the solution, making it stronger. Adding more solvent would dilute the solution instead.

​ (a)   the strength of a solution -- can be weak or strong.

• Concentration

• Saturated solution

Answer explanation

The strength of a solution refers to its concentration, which indicates how much solute is present in a given amount of solvent. A solution can be classified as weak or strong based on its concentration.

A change from one state (solid or liquid or gas) to another by freezing, melting or boiling a substance like water is a (a)  

• Physical change

• Chemical change

Answer explanation

A change from one state to another, such as freezing, melting, or boiling, is classified as a physical change. This is because the substance's chemical composition remains the same, only its state changes.

Tags

NGSS.MS-PS1-4