CP Phys Sci - Sem1Exam Review

Basic Skills

100

An educated guess

hypothesis

200

What is the correct measurement of liquid in this graduated cylinder? (include units)

27.0 mL

300

750 cm = _________ m

7.5 m

400

List all 3 base units of the metric system

meters
liters
grams

500

List 4 of the 6 steps of the scientific method in order

1. Ask a question

2. Conduct research
3. Form hypothesis
4. Experiment
5. Analyze results
6. Communicate results

The Atom

100

1.___________= positive charge

2.___________= negative charge

3.___________= neutral charge

1. proton

2. electron

3. neutron

200

Atomic Number - Atomic Mass = Number of ________

Neutrons

300

The same number of _____________ and ____________ makes an atom neutral

protons and electrons

400

How many valence electrons does Arsenic have?

5

500

The pictured atom is of what element?
(The gray particles are neutrons)

Beryllium (Be)

Compounds

100

If an atom gains an electron, it will become more ___________.

Negative

200

When a magnesium atom forms an ion, it will have what charge?

+2
(Mg²⁺)

300

The ions Ca²⁺ and Cl^- combine.
What is the formula for the compound?

CaCl₂

400

What is the name of CaCl₂?

Calcium Chloride

500

A metal and a nonmetal will form a(n) _________ bond.

Two nonmetals will form a(n) ___________ bond.

Ionic

Covalent

Reactions

100

Matter cannot be created or destroyed during a chemical reaction. This is the Law of ______________________________.

Law of Conservation of Mass

200

What are the big numbers in front of the elements/compounds called?

Example: 2H₂O → 2H₂ + O₂

coefficients

300

Classify the following reaction type:

NaCl + AgNO₃ → NaNO₃ + AgCl

Double-Displacement

400

Classify the following reaction type

C₆H₁₈ +O₂ → CO₂ + H₂O

Combustion

500

Balance the following equation

___C₁₀H₈ + ___O₂ → ___CO₂ + ___H₂O

___C₁₀H₈ + _12_O₂   →   _10_CO₂ + _4_H₂O

Mixtures

100

A mixture or substance with a pH of 7 is ______.

Neutral

200

A mixture with a pH between 0-7

A mixture with a pH between 7-14

Acid (0-7)

Base (7-14)

300

 Coffee has a pH of about 5.
Coffee is a _______ ________.

a. weak acid
b. strong acid
c. weak base
d. strong base

a. Coffee is a weak acid

400

Name one thing that is produced from an acid and a base neutralizing.

Water
or
Salt

(Salt water is produced when an acid and base are mixed)

500

The ______ ions are associated with a base

The ______ ions are associated with an acid

Base --> OH^- (Hydroxide)

Acid --> H⁺ (Hydrogen)