What happens during sublimation?

A solid changes directly into a gas and gains thermal energy.

What happens during deposition?

A gas changes directly into a solid and loses thermal energy.

How do particle attractions differ in states of matter?

Strong attractions keep particles close together in solids. Weaker attractions allow liquids and gases to move more freely.

What is scientific notation?

A way to write very large or very small numbers using powers of 10.

Positively charged particles found in the nucleus.

Neutral particles found in the nucleus.

Negatively charged particles found outside the nucleus.

What is atomic number?

The number of protons in an atom.

The average mass of an atom’s protons and neutrons.

How are elements arranged in the periodic table?

Elements are arranged by increasing atomic number.

What are groups on the periodic table?

Vertical columns. Elements in the same group have similar properties.

What are periods on the periodic table?

Horizontal rows. Elements in the same period have the same number of energy levels.

What is a chemical symbol?

A one- or two-letter abbreviation for an element.

What is the difference between an element and a molecule?

An element is made of one type of atom. A molecule is two or more atoms chemically bonded together.

What is a coefficient in a chemical formula?

A number in front of a formula that tells how many molecules are present.

What is a subscript in a chemical formula?

A small number that tells how many atoms of an element are in a molecule.

What is the difference between a molecule and an extended structure?

A molecule is a small group of bonded atoms. An extended structure is a large repeating arrangement of atoms.

A solid with atoms arranged in a repeating pattern, like salt.

A large molecule made of repeating smaller units, like plastic.

Why can molecules have different properties?

Different arrangements of the same atoms can create substances with different properties.

The ability of a substance to dissolve in another substance.

A combination of substances that are not chemically bonded.

What is a physical change?

A change in form or state that does not create a new substance.

What are examples of physical changes?

Melting ice, tearing paper, boiling water.

What is a chemical change?

A change that forms a new substance.

What are examples of chemical changes?

Rusting iron, burning wood, baking a cake.

What is evidence of a chemical reaction?

Color change, gas bubbles, temperature change, light, smell, or precipitate formation.

What are reactants in a chemical reaction?

The starting substances in a chemical reaction.

What are products in a chemical reaction?

The new substances formed in a chemical reaction.

What is a balanced chemical equation?

An equation with the same number of each type of atom on both sides.

What is the law of conservation of matter?

Matter cannot be created or destroyed in a chemical reaction.

What does the arrow in a chemical equation mean?

It shows that reactants produce products.

What is a synthesis reaction?

Two or more substances combine to form one product.

What is a decomposition reaction?

One substance breaks apart into smaller substances.

What is a single replacement reaction?

One element replaces another element in a compound.

What is a double replacement reaction?

Two compounds swap ions to form new compounds.

What is a mechanical wave?

A wave that requires a medium to travel.

What is an electromagnetic wave?

A wave that does not need a medium to travel.

What is a medium in wave motion?

The material through which a wave travels.

What do waves transfer?

Waves transfer energy, not matter.

What is the crest of a wave?

The highest point of a transverse wave.

What is the trough of a wave?

The lowest point of a transverse wave.

What is compression in a wave?

The crowded part of a longitudinal wave.

Science Concepts for Grade 6 Flashcards

Student preview

59 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is thermal energy?

Back

Thermal energy is the total energy of all particles in a substance.

2.

FLASHCARD QUESTION

Front

What is temperature?

Back

Temperature is the average kinetic energy of the particles.

3.

FLASHCARD QUESTION

Front

How does heat transfer?

Back

Heat moves from warmer objects to cooler objects through conduction, convection, and radiation.

4.

FLASHCARD QUESTION

Front

What happens during melting?

Back

A solid changes into a liquid and gains thermal energy.

5.

FLASHCARD QUESTION

Front

What happens during freezing?

Back

A liquid changes into a solid and loses thermal energy.

6.

FLASHCARD QUESTION

Front

What happens during evaporation?

Back

A liquid changes into a gas and gains thermal energy.

7.

FLASHCARD QUESTION

Front

What happens during condensation?

Back

A gas changes into a liquid and loses thermal energy.

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