Structures of Matter

Structures of Matter

Mr. Bouchard

Multiple Choice

Words made from letters of the alphabet are similar to molecules made from atoms. Based on what you already know about matter, which statement best explains this comparison?

• Atoms can make many different molecules, just like letters can make many different words.

• Molecules must contain many different atoms, just like words must contain many different letters.

• There are 26 different atoms that are used to form molecules, just like there are 26 different letters that are used to form words.

• There are no rules for how letters combine to make words, just like there are no rules for how atoms combine to make molecules.

Multiple Choice

Ian has been learning about different kinds of mixtures at school. While he was helping prepare dinner for his family, he noticed that some of the food they were preparing were making different kinds of mixtures. What kind of mixture was their dinner if they were having spaghetti and meatballs?

• heterogeneous

• homogeneous

• solute

• suspension

Multiple Select

Having studied mixtures at school, Daniel wanted to investigate how to separate the parts from different mixtures. He knows that the individual components of a solution kept their properties. So, Daniel gathered his materials and began to separate some of the mixture combinations. Which of the following tests could he perform to separate different kinds of mixtures? Choose the THREE statements that apply.

• Use a cup of salt and dissolve it by adding water.

• Use a magnet to separate the metal parts.

• Use a hotplate to evaporate the liquid.

• Use a filter to separate large particles.

Multiple Choice

Jose had an assignment to classify mixtures he found around his home. As he started exploring the house, he recalled that mixtures are defined by the size and behavior of the particles in them. He found some buckets of paint in the garage. What kind of mixture can paint be classified as?

• colloid

• solution

• solvent

• suspension

Multiple Select

Leandra is learning about chemical reactions and she wants to examine the information that is included in a chemical equation. Which pieces of information does a chemical equation include? Check the THREE that apply.

• the kinds of atoms that form during a reaction

• the kinds of molecules involved in the reaction

• whether the molecules are products or reactants

• whether the products have more mass than the reactants

Multiple Choice

One day on her walk home from school, Leann noticed some rust on an old car, She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts found on the left side of the equation below?

• products

• reactants

• scientific notation

• synthesis

Multiple Choice

__________ can be separated by different methods. The method for separation depends on physical properties, such as particle size, shape, color. and magnetic attraction.

• Liquid mixtures

• Compounds

• Molecules

• Solid mixtures

Multiple Choice

Sierra helps her father install an air purifier in her house. What type of separation method does an air purifier use to remove dust and allergens from the air?

• distillation

• filtration

• evaporation

• magnetic attraction

Multiple Select

Julian accidentally dropped his science display and all the illustrations and labels are scattered. Select ALL of the terms that apply to illustration A.

• element

• compound

• atom

• molecule

Multiple Select

Julian accidentally dropped his science display and all the illustrations and labels are scattered. Select ALL of the terms that apply to illustration B.

• element

• compound

• atom

• molecule

Multiple Select

Julian accidentally dropped his science display and all the illustrations and labels are scattered. Select ALL of the terms that apply to illustration C.

• element

• compound

• atom

• molecule

Multiple Select

Julian accidentally dropped his science display and all the illustrations and labels are scattered. Select ALL of the terms that apply to illustration D.

• element

• compound

• atom

• molecule

Multiple Choice

Water, air, buildings, food, and everything visible and invisible has mass and takes up space. What term is the previous statement describing?

• atom

• molecule

• solid

• matter

Multiple Choice

A pure substance is a single kind of matter. A(n) _________ is made up of two or more substances that are together in the same place, but each substance keeps its own properties.

• element

• compound

• molecule

• mixture

Multiple Select

Oliver's science project consists of six sealed and labeled containers. He challenges his classmates to identify pure substances versus mixtures. Which substances are considered pure substances?

• air

• smog

• oxygen

• sugar

• coffee

Multiple Select

Oliver's science project consists of six sealed and labeled containers. He challenges his classmates to identify pure substances versus mixtures. Which substances are considered mixtures?

• air

• smog

• oxygen

• coffee

• chocolate milk

Multiple Choice

Annie learns that the compound sulfuric acid is called the universal chemical. The acid is used in everything from gasoline to paper. Annie uses beads in three different colors to model sulfuric acid. Based on the model, what is the chemical formula of sulfuric acid?

Multiple Choice

Teresa stays home from school because she has a cold. Her father makes her chicken noodle soup and urges her to drink lots of orange juice. Both the soup and juice are mixtures, but one is a homogeneous mixture and the other is heterogeneous. Which food item is homogenous?

• chicken soup

• orange juice

Multiple Choice

Which of these statements is false?

• Oxygen and copper are examples of elements.

• Elements are pure substances.

• Atoms of different elements can combine to form compounds.

• Atoms of different elements are the same.

Multiple Choice

Magnesium bromide is an ionic compound with the chemical formula seen below. What does the "2" tell you?

• Bromide has a 2- charge

• There are two magnesium ions to every bromine ion

• There are two bromine ions for every magnesium ion

• Bromide has a 2+ charge

Multiple Choice

A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be

• balanced.

• unbalanced.

• an incomplete reaction.

• a replacement reaction.

Multiple Choice

Substances that CANNOT be broken down chemically into other substances are

• elements.

• compounds.

• mixtures.

• solutions.

Multiple Choice

A(n) __________ is made of only one kind of matter and has definite properties.

• atom

• element

• compound

• pure substance

Multiple Choice

The smallest particle of an element is called a(n) __________.

• atom

• element

• molecule

• mixture

Multiple Choice

A(n) __________ is made of two or more substances - elements, compounds, or both - that are together in the same place but are not chemically combined.

• compound

• formula

• mixtures

• molecules

Multiple Choice

A compound may be represented by a(n) _________, which shows the elements in the compound and the ratio of atoms.

• element

• formula

• mixture

• pure substance

Multiple Choice

A(n) __________ is a substance formed from two or more elements that are chemically combined.

• atom

• element

• compound

• mixture