States of Matter
Atomic Structure
Element, Compound, Molecule
Counting Atoms
Physical vs. Chemical
Chemical Equations
Law of Conservation of Mass
1

What state of matter has the least amount of energy?

Solid

1

Name all three subatomic particles.

Protons, neutrons, & electrons

1

True or false?  A compound is made up of 2 or more different atoms combined.

True

1

How many carbon atoms in this formula? C6H1206

Six

1

Which of these is a physical change: Cutting paper, dissolving sugar in lemonade, melting ice

All of them

1

What type of chemical reaction absorbs heat?

Endothermic

1

What does the Law of Conservation of Mass state?

Mass is neither created nor destroyed in a chemical reaction

2

As temperature increases, atoms will move ________

Faster

2

The atomic mass number for an element identifies the number of....

Protons & neutrons

2

Element, compound, or molecule?

Element

2
How many total atoms are in this molecule? Na2SO4

Seven

2

Which of these is a chemical change: Water boiling, rusting iron, breaking glass

Rusting iron

2

What type of chemical reaction releases heat?

Exothermic

2

In a balanced equation, both sides will be __________

Equal in mass

3

Is air matter?  Why or why not?

Air is matter because it has mass and takes up space.

3

The atomic number of an element identifies the number of....

Protons & electrons

3

Element, molecule, or compound?

Compound

3

How many oxygen atoms are in this formula? Al2(SO4)3

Twelve

3

Name one chemical property of matter.

Examples: Flammability, reactivity, ability to rust, toxicity

3

2H2+O2→2H2O: This is an example of a chemical _______________

Equation

3

The left side of a chemical equation is known as the __________

Reactants

4

Which state of matter won't take the shape of its container?

Solid

4

What is the center of an atom called?

Nucleus

4

Element, molecule, or compound?

Molecules

4

How many hydrogen atoms are in this formula? 5NaHCO3

Five

4

Name one physical property of matter.

Examples: Color, hardness, density, solubility, boiling point, taste, state/phase

4

The four in NH4 is called a _____________

Subscript

4

The right side of a chemical equation is known as the _______________

Products

5

What are the two particles that make up all matter?

Atoms & molecules

5

If you subtract the atomic number from the atomic mass, you will be able to find...

The number of neutrons

5

Element, molecule, or compound?  CO2

Compound

5

How many atoms are present in H₂C₂O₄?

Eight

5

What is the difference between a physical property and a chemical property?

A physical property can be observed without changing the substance, where a chemical property shows potential to create something new.

5

The 5 in 5CO2 is called a _____________

Coefficient

5

Balance this equation by finding the missing mass: 5.3g + 8.2g --> ?? + 4.1g

9.4g