Which statement best describes the periodic table?

Elements in the same group have similar chemical properties.

Each vertical column forms a period.

The number of electrons decreases from left to right.

The atomic mass decreases from left to right.

Which action causes a physical change but not a chemical change?

dissolving an antacid tablet in water

When 20 grams of vinegar is poured into a beaker containing 5 grams of baking soda, the mixture begins to bubble. When the reaction is completed, the mass of the products in the beaker is 16.3 grams. Which best explains this?

A gas was released during the chemical reaction.

A gas was released during the physical reaction.

A precipitate formed during the physical reaction.

A precipitate formed during the chemical reaction.

Which best describes sodium chloride (NaCl)?

a compound which is chemically produced

a mixture which is physically produced

a mixture which is chemically produced

a compound which is physically produced

After a scientist mixes two clear solutions, he is unable to detect a temperature change. However, he knows a chemical change occurred. Which evidence best proves a chemical change did indeed occur?

A solid precipitate was produced which settled out of the solution.

There was an increase in the mass of the new solution produced.

There was a decrease in the volume of the new solution produced.

Two distinct layers were observed when the two original solutions were combined.

Which describes a chemical change taking place?

Gas bubbles form when a substance is put into water.

Water boils when heat is added.

Water vapor surrounds a melting ice cube.

Color changes when food coloring is added to water.

The volume of an irregular object can be measured by

submerging the object in water in a graduated cylinder

multiplying the object's length, width, height

placing object on triple beam balance

The atomic number of an element is based on the

number of protons in the nucleus

number of electrons around its core

number of neutrons in its nucleus

In general which of the following statements about metals is true

metals are malleable, ductile, and can carry and electrical current

metals need to be stored for safety

metals are highly reactive substances

metals do not react with oxygen

Which of these statements about a column of the periodic table is true

The elements have similar characteristics

The elements have a wide range of characterisitcs

The elements have the same atomic number

The elements have the same atomic mass

A material is said to be ductile if it

can be pulled or drawn into a long wire

can be hammered or rolled into shapes

is a mixture of metal with another element

Chemistry Quiz Quiz

54 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Copper reacts with oxygen to form copper oxide. How do the properties of copper oxide compare to the properties of copper and oxygen?

Copper oxide is different from copper and oxygen.

Copper oxide is similar to both copper and oxygen.

Copper oxide is similar only to copper.

Copper oxide is similar only to oxygen.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which action provides evidence that elements can combine to form new compounds?

adding heat to melt a solid

removing heat to freeze a liquid

moving a piece of metal with a magnet

pouring two liquids together to form a solid

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an element?

water

nitrogen

carbon dioxide

NaCl

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the law of conservation of mass mean during a chemical reaction?

The total mass of the reactants is greater than the total mass of the products.

The total mass of the reactants is the same as the total mass of the products.

The total mass of the reactants is less than the total mass of the products.

The total mass of the reactants and products cannot be measured.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a chemical property?

density

shape

color

flammability

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a physical property of copper?

ductile

liquid at room temperature

readily reacts with water to form an acid

readily reacts with oxygen

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

On the periodic table, what is a group of elements that are arranged in a vertical column called?

gas

family or group

cluster

period

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Chemistry Quiz

Copper reacts with oxygen to form copper oxide. How do the properties of copper oxide compare to the properties of copper and oxygen?

Which action provides evidence that elements can combine to form new compounds?

Which of the following is an element?

What does the law of conservation of mass mean during a chemical reaction?

Which of the following is an example of a chemical property?

Which of the following is a physical property of copper?

On the periodic table, what is a group of elements that are arranged in a vertical column called?

Which of these materials is a good conductor of heat and electricity?

Which element is a metalloid?

Which of the following is the product of a chemical change?

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