Unit 1 - Matter and Chemistry Review

Unit 1 - Matter and Chemistry Review

​Unit 1 Review

1. ​Atoms

2. ​Periodic Table of Elements

3. ​Pure Substances and Mixtures

4. ​Properties and Changes

5. ​Law of Conservation of Mass

6. ​States of Matter

Poll

How would you describe your understanding of Unit 1 topics?

• I know this material well enough to teach it to my classmates.

• I know most of the material for Unit 1.

• I still need to review some of the concepts from Unit 1.

• I don't know much at all from Unit 1.

​ATOMS

• ​Atoms are the building blocks of all matter

• ​Everything that is considered "matter" is composed of millions of tiny atoms

• ​Matter is anything that has mass and takes up space (has volume)

Fill in the Blank

__________ are negatively charged subatomic particles found in the shells/orbits of an atom

Multiple Choice

Letter B represents which subatomic particle?

• proton

• neutron

• electron

• quark

Multiple Choice

_________ and _________ are both located in the nucleus of the atom.

• Protons, electrons

• Neutrons, electrons

• Protons, quarks

• Protons, neutrons

Multiple Choice

How is the Periodic Table arranged?

• Elements are in alphabetical order.

• Elements are organized by atomic mass.

• Elements are organized by number of protons.

• Elements are organized by the scientists who discovered them

Multiple Choice

Periods are vertical columns (up and down) on the Periodic Table.

• True

• False

Multiple Choice

How many periods or rows are there on the periodic table?

• 7

• 9

• 12

• 18

Multiple Choice

What is the symbol for potassium on the periodic table?

• P

• Po

• W

• K

• Pt

Multiple Choice

What does the atomic number mean?

• number of neutrons

• number of protons

• number of shells/orbits

• number of groups on the periodic table

Multiple Choice

Groups are also called families because elements in the same column share similar properties.

• True

• False

​Pure Substances

• ​Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.

• ​Pure substances are further classified as elements and compounds.

• ​All elements are mostly pure substances. A few of them include gold, copper, oxygen, chlorine, diamond, etc.

• Compounds such as water, salt or crystals, baking soda amongst others are also grouped as pure substances.

Fill in the Blank

Elements and ___________ are the two types of pure substances.

Multiple Choice

_______ is NOT an example of a pure substance.

• Water

• Tea

• Salt

• Sugar

Multiple Select

Select ALL of the pure substances.

• Sodium

• H₂O

• Air

• Tea

• Carbon Dioxide

Multiple Choice

Which particles do NOT represent a pure substance?

• A

• B

• C

• D

What is a MIXTURE?

• ​A substance, on the other hand, is impure if it consists of different kinds of elements combined physically and not chemically. Impure substances are also called mixtures.

• Mixtures are further divided into homogeneous or heterogeneous.

Multiple Select

Select ALL mixtures.

• element

• homogeneous

• compound

• molecule

• heterogeneous

Open Ended

What is the difference between a homogeneous and heterogeneous mixture?

Multiple Choice

Density and ________ are physical properties of matter.

• conductivity

• reactivity

• flammability

Multiple Select

Select ALL chemical properties of matter.

• conductivity

• reactivity

• flammability

• solubility

• combustibility

Multiple Choice

A melting popsicle is a _________ change.

• chemical

• elemental

• molecular

• physical

Multiple Select

Select ALL examples of chemical changes.

• exploding fireworks

• melting popsicle

• baking a cake

• vinegar and baking soda reacting and producing a gas

• cutting your hair

Multiple Choice

What is matter?

• anything with mass

• anything that has mass and weight

• anything that has mass and takes up space

Multiple Choice

In what way are liquids different from solids?

• Liquid molecules are lighter than solid molecules

• Liquids don't have a fixed shape; solids do

• Liquids are made of atoms; solids are made of molecules

• Liquids are always denser than solids

Multiple Select

What will happen if you keep increasing the temperature of a liquid? Select ALL that apply.

• It will boil & become a gas

• It will remain a liquid

• It will transpire

• Its particles will speed up and spread apart.

Multiple Choice

The Law of Conservation of Mass states that matter IS created AND able to be destroyed in chemical reactions.

• FALSE

• TRUE

Multiple Choice

An Oreo cookie has a mass of 20 grams. It gets crushed into crumbs for a recipe. What is the mass of the crumbs?

• 10 grams

• 15 grams

• 20 grams

• 25 grams

Poll

CH₄ and O₂ are called ______ in a chemical reaction.

• products

• elements

• m

Poll

Is this chemical equation balanced? Select the best answer.

• No, because the nickel atoms in the reactants are greater than the nickel atoms in the product.

• Yes, because the oxygen atoms in the reactants are less than the oxygen atoms in the product.

• No, because the reactants and products are equal.

• Yes, because the reactants and products are equal.

Poll

How would you describe your understanding of Unit 1: Matter and Chemistry?

• I know all or most of the material from Unit 1.

• I still need to study a few topics from Unit 1.

• I still need to study everything from Unit 1.