Chemistry Semester 1 Review

Multiple Choice

The measure of the pull of gravity.

• Weight

• Gravity

• Volume

• Density

Multiple Choice

The amount of matter in an object; measured by grams, milligrams, or kilograms.

• Matter

• Mass

• Weight

• Volume

Multiple Choice

Which cup of water has a bigger volume?

• Left Cup

• Right Cup

Multiple Choice

Metric unit used to record mass.

• cm³
• grams (g)
• miliLiter
• liter (L)

Multiple Choice

Anything that has mass and takes up space.

• Mass

• Matter

• Weight

• Volume

Multiple Choice

How much space an object takes up.

• Mass

• Weight

• Volume

• Matter

Multiple Choice

Tool used to measure MASS

• Metric Ruler

• Triple Beam Balance

• Graduated Cylinder

• Thermometer

Multiple Choice

Find the mass.

• 550.4 g

• 559.4 g

• 559.6 g

• 550.6 g

Multiple Choice

50 mL of water was added to the graduated cylinder. After we drop in the object, the new water level goes up to 60 mL. What is the volume of the blocks? (Hint: new volume- old volume)

• 8 mL

• 10 mL

• 60 mL

• 5 mL

​Density, mass and volume

Multiple Choice

A crayon has a mass of 10g and volume of 5 ml. What is the density?

• 30 g/ml

• 15 g/ml

• 1 g/ml

• 2 g/ml

Multiple Choice

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

• 8 g/cm³
• 2 g/cm³
• 1/2 g/cm³
• 24 g/cm³

Multiple Choice

Which liquid has the least density?

• Water
• Glycerine
• Corn Oil
• Corn Syurp

Multiple Choice

The mass and an unknown property are graphed for five samples of the same solid material.

• Density

• Energy

• Volume

• Weight

​Chemical vs Physical Properties

Multiple Choice

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties

Multiple Choice

Properties that can be observed without changing the identity of the substance.

• Physical
• Chemical

Multiple Choice

Example for physical property

• odor
• burns in air
• reacts with water to create hydrogen gas
• rust

​
Physical change:
1. Temporary change (e.g. change of state of matter)
2. Same substance
Chemical change
1. Permanent change - must go through chemical change to reverse
2. New substance formed.

​Chemical vs Physical Changes

​Examples

Multiple Choice

what is the definition of physical change?

• any change that results in the formation of new chemical substances. 
• rusting
• changes affecting the form of a chemical substance, but not its chemical composition.
• any property that is measurable, whose value describes a state of a physical system

Multiple Choice

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• evaporation; chemical change
• condensation; physical change 
• evaporation; physical change
• condensation; chemical change

Multiple Choice

A balanced particle-diagram equation is shown.

Which statement describes the type of change and the chemical properties of the product and reactants?

• The equation represents a chemical change, with the product and reactants having identical chemical properties.

• 1. The equation represents a physical change, with the product and reactants having identical chemical properties.

• 1. The equation represents a chemical change, with the product and reactants having different chemical properties.

• 1. The equation represents a physical change, with the product and reactants having different chemical properties.

Multiple Choice

When you break a cracker into pieces it is a 

• Chemical change
• Physical change
• Chemical property

• Physical property

Multiple Choice

Which of the following is a sign that a chemical reaction has occurred?

• Oxygen combines with substance to form rust

• bubbles forming

• formation of a gas
• heat, light, or temperature change

• All the above

Multiple Choice

Which statement describes a chemical property of cobalt?

• can be drawn into a wire.

• conducts electricity and heat.

• combines with oxygen to form rust.

• can be flattened into sheets

Multiple Choice

What is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

Multiple Choice

Properties that DO depend on the amount of matter present.

• Mass

• Hardness

• Extensive

• Intensive

Multiple Choice

Properties that do NOT depend on the amount of a substance.

• Mass

• Hardness

• Extensive

• Intensive

Multiple Choice

Which of the following is an extensive property?

• Color

• Mass

• Odor

• Luster

Multiple Choice

Which of these observations describes an extensive property of gold?

• Shiny, bright appearance

• 1,943 degrees Fahrenheit melting temperature.

• 19.3 g/cm³

• 100 grams

Multiple Choice

Which of the following is an extensive property?

• Hardness

• Boiling Point

• Density

• Weight

Multiple Choice

Which of the following is an intensive property?

• Color

• Mass

• Volume

• Weight

Multiple Choice

What kind of physical property is this? Density

• intensive

• extensive

Multiple Choice

Olivia measured mass and another property, X, of three pure samples of the same compound. She recorded her data in the table.

Which of the following best describes property X?

• 1. X is an intensive property because it varies directly with the size of the sample.

• 1. X is an extensive property because it does not vary with the size of the sample.

• 1. X is an intensive property because it does not vary with the size of the sample.

• 1. X is an extensive property because it varies directly with the size of the sample.

Groups of the Periodic Table

Names of the columns

• Elements in groups behave similarly.

• Many of the important groups have names.

Alkali Metals

All have 1 valence electron

All VERY reactive!

The get more reactive as you go down the column.

Group 2

Alkaline-Earth Metals

Alkaline-earth Metals

All have 2 valence electrons

Group 17

Halogens

Halogens

All have 7 valence electrons

Halogens

Also VERY reactive!

Group 18

Noble Gases

Noble Gases

All have 8 valence electrons

(except for He, it has 2!)

Noble Gases

Very UNreactive!

Groups 3-12

Transition Metals
Called transition metals because their charges change, depending on what they're bonded to. I.e. they do not have a set # of valence e-.

Multiple Choice

Each column in the periodic table is called a _________ .

• period
• group
• cluster
• unit

Multiple Select

Elements in the same group have : (2 correct answers)

• Similar chemical properties

• Similar names

• Same number of outer (valence) electrons)

• The same number of protons

Multiple Select

Which two groups are the most reactive?

• halogens

• alkaline earth metals

• noble gases

• alkali metals

• salts

Multiple Choice

Which group of elements is the most snooty and doesn't want to play with any of the other groups?

• Halogens

• Lanthanides

• Alkali Earth Metals

• Noble Gases

• Alkali Metals

Multiple Choice

Which group does Bromine belong to?

• Alkali Metals

• Alkaline-Earth Metals

• Halogens

• Noble Gases

• Transition Metals

Multiple Choice

Which group does sodium belong to?

• Alkali Metals

• Alkaline-Earth Metals

• Halogens

• Noble Gases

• Transition Metals

Multiple Choice

Which of the following elements is most likely to have similar properties to those of sodium (Na)?

• Magnesium (Mg)

• Sulfur (S)

• Francium (Fr)

• Titanium (Ti)

Multiple Choice

Name this group: These metals contain familiar metals such as gold, iron, and copper.

Multiple Choice

Which two elements have the most similar chemical properties?

• Ca and F

• B and Ga

• Li and Ag

• He and O

Multiple Choice

Which of the following will have similar properties?

• O, S, Se

• O, F, Ne

• N, Ne, Na

• H, K, P

Multiple Choice

Find an element with similar chemical properties to Barium (Ba).

• Ca an Ra, because they are in the same group and have similar chemical properties.

• Cs and La, because they are in the same period number.

• Ca and Y, because they are 90 degree angle and have similar properties.

Multiple Choice

How many valence electrons are found in atoms of group 1?

• 7

• 6

• 4

• 1

Multiple Choice

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

• 31

• 5

• 15

• 4

Multiple Choice

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

Multiple Choice

How many TOTAL electrons does Phosphorus have?

• 15

• 11

• 20

• 5

Multiple Choice

How did Dmitri predict elements?

• Time traveled

• Predicted the properties by the atomic numbers left

• Guess and checked

• Calculated the atomic mass and properties

Multiple Choice

Dmitri Mendeleev arranged the 63 known elements at the time by __________________.

• atomic number

• atomic weight

• neutron number

• none of the above

Multiple Choice

What was observed that led to arrange sixty-three already-known elements by increasing atomic weights in the periodic table?

• 1. A repetition occurs in chemical and physical properties.

• 1. An atomic weight corresponds to the existing abundance.

• 1. The number of neutrons and protons increased by one.

• 1. The chemical compounds formed by the elements increased by one.

Multiple Choice

How are the elements arranged on the periodic table today?

• By atomic mass

• By number of electrons

• By atomic number

• By alphabetic order

Multiple Choice

In 1869, Mendeleev created a periodic table in which elements were ordered by atomic weight and placed in groups based on their chemical properties. Mendeleev's decision to design the periodic table in this way allowed immediate advances in chemistry by —

• 1. providing a framework for models of electron configurations.

• 1. discovering the inert gas family, the noble gases

• 1. providing an explanation for the reactive properties of the alkali metals.

• 1. predicting the physical/chemical properties of yet undiscovered elements

Two Types of Substances

1. Element: simplest form

of matter from which
more complex
substances are made
(listed on the Periodic
Table)
– All the atoms that make up

an element are alike

– Ex. Helium

Multiple Select

Choose all the items that are elements.

• NaCl (table salt)

• Sulfur

• O₂

• Water

• Air

Multiple Choice

Which of the following will NOT break down due to a chemical change?

• NaCl

• Ni

• H2O

• FeO2

Two Types of Substances

2.

Compound: two or more elements chemically combined
in a fixed proportion

– Can be broken down, but only by chemical reactions

– Have properties different elements that make them up

Ex. H2O
(Water)

Ex. C6H12O6

(Sugar)

Ex. NaCl
(Table Salt)

Multiple Choice

Mercury is (Hg)

• Element

• Compound

Multiple Choice

Water is (H20)

• Element

• Compound

Multiple Choice

Oxygen is (O2)

• Element

• Compound

Multiple Choice

Carbon Dioxide (CO2)

• Element

• Compound

Multiple Select

Choose all of the items that are compounds.

• NaCl (table salt)

• Sulfur

• O₂

• Water

Multiple Choice

A suspension is a mixture of a solid and a liquid. The solid can be seen evenly throughout the liquid. After a long period of time, the solid will settle to the bottom of the mixture. Is a suspension a compound?

• 1. No it is not, because the solid can only be separated through chemical processes.
     

• 1. Yes it is, because the solid can only be separated through chemical processes.

• 1. No it is not, because the solid can be separated through physical processes.

• 1. Yes it is, because the solid can be separated through physical processes.