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Bio 1 Ch 6 Test

Total questions: 44

Worksheet time: 22mins

Name
Class
Date
1.

Anything that takes up space and has mass.

a)

Matter

b)

Volume

c)

Yardstick

d)

Mixture

2.

What are the building blocks of matter?

a)

Atoms

b)

Molecules

c)

Compounds

d)

Matter

3.

The center of the atom contains...

a)

Protons and neutrons

b)

Protons and electrons

c)

Neutrons and electrons

d)

Energy levels and electrons

4.

The center of the atom is also known as...

a)

Nucleus

b)

Protons

c)

Energy level

d)

Periods

5.

In the center of the atom, these are positively charged...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Atoms

6.

These subatomic particles lack any kind of charge.

a)

Neutrons

b)

Electrons

c)

Protons

d)

Shells

7.

These subatomic particles are NOT located in the center of the nucleus and hold a negative charge.

a)

Protons

b)

Neutrons

c)

Electrons

d)

Atoms

8.

A pure substance that can not be broken down into other substances by physical or chemical means...

a)

Element

b)

Compound

c)

Molecule

d)

Matter

9.

When looking at the periodic table, the horizontal rows are known as...

a)

Periods

b)

Groups

c)

Energy levels

d)

Valence

10.

The vertical columns of the periodic table are known as...

a)

Periods

b)

Groups

c)

Elements

d)

Charge

11.

Two given elements, have an equal number of protons (4). One of the elements has 3 neutrons and the other has 4. These elements are known as...

a)

Isotopes

b)

Matter

c)

Ions

d)

Periods

12.

When two or more different elements combine to form a pure substance, this is known as...

a)

Heterogenous

b)

Compound

c)

Atom

d)

Matter

13.

When two substances combine, the force that holds them together is known as...

a)

Chemical bond

b)

Ion

c)

Isotope

d)

Periodic table

14.

A covalent bond is when...

a)

Electrons are shared

b)

Electrons are accepted and donated

c)

Electron clouds are attracted to one another

d)

Atoms separate

15.

Which of the following is a substance that is formed from COVALENT bonds?

a)

Water

b)

NaCl (salt)

c)

Sodium

d)

Iron (II) Oxide

16.

When a compound is held together by COVALENT bonds, we call that compound a(n)...

a)

Ion

b)

Molecule

c)

Period

d)

Isotope

17.

When an atom loses or gains an electron, there is now an imbalance of charges at it creates an overall positive or negative electric charge, this atom is called a(n)...

a)

Ion

b)

Isotope

c)

Molecule

d)

Compound

18.

When an atom wants to have a filled outermost shell, it will donate or accept electrons from other atoms, when this occurs, it is known as...

a)

Ionic bond

b)

Covalent bond

c)

Molecule

d)

Isotope

19.

When a bond between sodium and chlorine occurs, salt is formed. In this bond, sodium gives up an electron to chlorine, sodium (Na) now becomes...

a)

 Na+Na^+  

b)

 Na−Na^-  

c)

 Cl−Cl^{-^{ }}  

d)

 Cl+Cl^+  

20.

Elements in a covalent bond do not always attract electrons equally. Electron movement can cause unequal distribution of the electron cloud around the molecule, creating areas of partial positive and partial negative charge, these regions pull on molecules and hold them together. This is called...

a)

Van der Waals forces

b)

Ionic bonds

c)

Covalent bonds

d)

Isotopes

21.

Which of the following helps water molecules cling to one another?

a)

Van der Waals forces

b)

Covalent bonds

c)

Ionic bonds

d)

Chemical reactions

22.

A process in which atoms or groups of atoms in substances are reorganized into different substances...

a)

Chemical reaction

b)

Ionic bond

c)

Covalent bond

d)

Molecule

23.

The starting substances of a reaction are known as...

a)

Reactants

b)

Products

c)

Ions

d)

Atoms

24.

When writing out a chemical reaction...

a)

The number of atoms must be equal on both reactants and products side.

b)

The number of product atoms is always greater than number of reactant atoms.

c)

The number of reactant atoms is always greater than the number of product atoms.

d)

It is impossible to know how much product you will have after the reaction is complete.

25.

Which of the following is an example of a chemical reaction that occurs in living organisms?

a)

Enzymes

b)

Water

c)

Mixtures

d)

Macromolecules

26.

An enzyme works by lowering the activation energy needed for a reaction to occur in the body, because of this, an enzyme is a good example of a(n)

a)

Catalyst

b)

Substrate

c)

Macromolecule

d)

Isotope

27.

The minimum amount of energy needed for reactants to form products in a chemical reaction is known as...

a)

Activation energy

b)

Enzymes

c)

Ionic bond

d)

Van der Waals forces

28.

Which of the following is something that a catalyst does NOT do?

a)

Lowers activation energy.

b)

Increases the amount of product created.

c)

Reacts with a substrate.

d)

Changes shape during a reaction.

29.

The reactant that binds to an enzyme is known as...

a)

Substrate

b)

Catalyst

c)

Ion

d)

Bond

30.

The specific place that a substrate binds to an enzyme is known as the...

a)

Active site

b)

Substrate

c)

Complex

d)

Reactant

31.

Water is formed from...

a)

Ionic bonds

b)

Covalent bonds

c)

Van der Waals forces

d)

Hydrogen bonds

32.

There is an unequal distribution of electrons in a water molecule, this makes water into a(n)...

a)

Ion

b)

Polar molecule

c)

Isotope

d)

Ionic compound

33.

A weak interaction between hydrogen atoms and other fluorine, oxygen, or nitrogen atoms are known as...

a)

Hydrogen bonds

b)

Covalent bonds

c)

Ionic bonds

d)

Chemical reactions

34.

A combination of two or more substances in which each substance retains its individual characteristics and properties...

a)

Mixture

b)

Reaction

c)

Enzyme

d)

Catalyst

35.

A homogenous mixture has...

a)

Uniform composition

b)

Distinct components

c)

Charge

d)

Unique characteristics

36.

What are the 2 components that make up a solution, or homogenous mixture?

a)

Solvent and Solute

b)

Ionic and covalent bond

c)

Solution

d)

Oxygen and hydrogen

37.

Substances that release hydrogen ions when dissolved in water are known as...

a)

Acids

b)

Bases

c)

Isotopes

d)

Substrates

38.

A solution that has a pH of 9 is...

a)

Acidic

b)

Basic

c)

Neutral

d)

Toxic

39.

A large molecule that is formed by joining smaller molecules together is known as...

a)

Macromolecule

b)

Isotope

c)

Ion

d)

Chemical bond

40.

A polymer is a molecule made from repeating units of identical or nearby identical compounds called...

a)

Monomers

b)

Macromolecules

c)

Atoms

d)

Lipids

41.

Which of the following is a polysaccharide found in humans and animals?

a)

Glycogen

b)

Lipids

c)

DNA

d)

Bones

42.

Which macromolecule is composed of fatty acids and glycerol?

a)

Carbohydrates

b)

Lipids

c)

Nucleic Acids

d)

Proteins

43.

Which macromolecule is involved in nearly every function of your body?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

44.

What kind of macromolecule is DNA and RNA?

a)

Nucleic acids

b)

Carbohydrates

c)

Proteins

d)

Lipids

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