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Unit 1 - Structure & Classification of Matter

Total questions: 49

Worksheet time: 37mins

Name
Class
Date
1.

A combination of two or more substances that are NOT chemically combined, and can therefore be PHYSICALLY separated is a ...

a)

Mixture

b)

Pure substance

2.

A type of matter with a fixed composition that cannot be separated by physical means (like elements and compounds) is a ...

a)

Mixture

b)

Pure substance

3.

What type of substance is shown here?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

4.

What type of substance is shown here?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

5.

What type of substance is shown here?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

6.

What type of substance is shown here?

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

7.

What description matches this picture?

a)

Pure element (only one type of atom)

b)

Mixture of two elements (two types of uncombined atoms present)

c)

Pure compound

d)

Mixture of two compounds

e)

Mixture of a compound and an element

8.

What description matches this picture?

a)

Pure element (only one type of atom)

b)

Mixture of two elements (two types of uncombined atoms present)

c)

Pure compound

d)

Mixture of two compounds

e)

Mixture of a compound and an element

9.

What description matches this picture?

a)

Pure element (only one type of atom)

b)

Mixture of two elements (two types of uncombined atoms present)

c)

Pure compound

d)

Mixture of two compounds

e)

Mixture of a compound and an element

10.

What description matches this picture?

a)

Pure element (only one type of atom)

b)

Mixture of two elements (two types of uncombined atoms present)

c)

Pure compound

d)

Mixture of two compounds

e)

Mixture of a compound and an element

11.

What description matches this picture?

a)

Pure element (only one type of atom)

b)

Mixture of two elements (two types of uncombined atoms present)

c)

Pure compound

d)

Mixture of two compounds

e)

Mixture of a compound and an element

12.

Choose all of the substances that are pure elements found on the Periodic Table.

a)

Chalk (CaCO3)

b)

Gatorade

c)

Copper (Cu)

d)

Wood

e)

Mercury (Hg)

13.

Choose all of the substances that are compounds made of more than one element.

a)

Chalk (CaCO3)

b)

Phosphoric acid (H3PO4)

c)

Gatorade

d)

Wood

e)

Mercury (Hg)

14.

Choose all of the substances that are mixtures (NOT pure substances).

a)

Chalk (CaCO3)

b)

Cobalt (Co)

c)

Bronze

d)

Wood

e)

Mercury (Hg)

15.

A mixture in which materials can easily be distinguished from one another and is NOT UNIFORM throughout its composition is a _______________ mixture.

a)

Homogeneous

b)

Heterogeneous

16.

Choose all of the substances that are HETEROGENEOUS mixtures.

a)

Gatorade

b)

Bowl of Lucky Charms

c)

Wood

d)

Windex

e)

Salad dressing

17.

A mixture that is well mixed with a UNIFORM composition composition and state of matter throughout is a _______________ mixture.

a)

Homogeneous

b)

Heterogeneous

18.

Choose all of the substances that are HOMOGENEOUS mixtures.

a)

Saltwater

b)

Oil & water

c)

Soil/dirt

d)

Iced tea (tea with ice in it)

e)

Black coffee (no cream or sugar added)

19.

As you move from the left to right on the Periodic table, the reactivity of metals ...

a)

Increases

b)

Decreases

20.

Identify the group with the MOST reactive metals on the Periodic Table.

a)

1

b)

2

c)

17

d)

18

21.

Which metal is more reactive?

a)

Calcium (Ca) in Group 2

b)

Silver (Ag) in Group 11

22.

As you move from the left to right on the Periodic table, the reactivity of nonmetals ...

a)

Increases

b)

Decreases

23.

Identify the group with the MOST reactive nonmetals on the Periodic Table.

a)

1

b)

2

c)

17

d)

18

24.

Which nonmetal is more reactive?

a)

Carbon (C) in Group 14

b)

Sulfur (S) in Group 16

25.

Which group (1-18) on the Periodic Table contains the elements that are the most stable and completely nonreactive?

a)

1

b)

2

c)

17

d)

18

26.

Which elements are semi-conductors that have properties of both metals and nonmetals?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

27.

Which elements are shiny good conductors with high melting points?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

28.

Which elements are poor conductors with low luster that are not malleable or ductile? Most of them are solids at room temperature.

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

29.

Which elements are completely non-reactive and exist as gases at room temperature?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

30.

Which elements are identified by the red box in this image?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

31.

Which elements are colored blue in this image?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

32.

Which elements border the staircase on the periodic table?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

33.

Which elements are colored red in this image?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

34.

What part of the atom is located in the very center and contains protons and neutrons?

a)

Nucleus

b)

Orbitals

c)

Electron Cloud

35.

What is the red positively charged particle in the image?

a)

Neutron

b)

Electron

c)

Proton

36.

What is the green particle with a neutral charge in the image?

a)

Neutron

b)

Electron

c)

Proton

37.

What is the blue negatively charged particle in the image?

a)

Neutron

b)

Electron

c)

Proton

38.

Most of the mass of the atom is concentrated in the ___________

a)

Nucleus

b)

Electron cloud

39.

How do you find the number of protons in an atom?

a)

It is the same as the atomic number

b)

It is the same as the atomic mass

c)

It is the same as neutrons

40.

How many protons are in an atom of Sodium (Na)?

a)

11

b)

12

c)

22.990

d)

23

41.

How do you find the number of electrons in an atom?

a)

It is the same as protons

b)

It is the same as atomic mass

c)

Subtract atomic number from atomic mass

42.

How many electrons are in an atom of Sodium (Na)?

a)

11

b)

12

c)

22.990

d)

23

43.

How do you find the number of neutrons in an atom?

a)

It is the same as protons

b)

It is the same as atomic mass

c)

Subtract atomic number from atomic mass

44.

How many neutrons are in an atom of Sodium (Na)?

a)

11

b)

12

c)

22.990

d)

23

45.

__________ are vertical columns on the Periodic Table where elements have the same number of valence electrons.

a)

Periods

b)

Groups

46.

__________ are horizontal rows on the Periodic Table where elements have the same number of orbitals.

a)

Periods

b)

Groups

47.

This element is a poor conductor of electricity, not shiny, and has a low melting point. It has an atomic mass of 78.971.

a)

Platinum (Pt)

b)

Gold (Au)

c)

Selenium (Se)

d)

Bromine (Br)

48.

This element is a semi-conductor of heat located in Period 3 and Group 14.

a)

Silicon (Si)

b)

Germanium (Ge)

c)

Gallium (Ga)

d)

Carbon (C)

49.

This element is the metal with the lowest atomic number.

a)

Hydrogen (H)

b)

Helium (He)

c)

Lithium (Li)

d)

Beryllium (Be)

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