Compare physical changes such as size, shape and state to chemical changes that are the result of a chemical reaction to include changes in temperature, color, formation of a gas or precipitate
Classify matter as elements, compounds, or mixtures based on how the atoms are packed together in arrangements
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Q 1/32
Score 0
The atomic number of an element is the total number of which particles in the nucleus?
30
how many neutrons in the nucleus of that atom
the mass of that atom
how many electrons in the energy levels of that atom
how many protons in the nucleus of that atom
Q 2/32
Score 0
Can an element be changed into another substance?
30
yes an element can change into another substance
If heated, The element will change into another substance
No an element can not change into another substance
32 questions
Q.
The atomic number of an element is the total number of which particles in the nucleus?
1
30 sec
Q.
Can an element be changed into another substance?
2
30 sec
Q.
Which elements are highly reactive and are mostly likely to form compounds?
3
30 sec
8.P.1.2
Q.
Production of a solid in a chemical reaction
4
30 sec
Q.
The change in size, shape, or state of matter. Tearing a piece of paper in half or freezing water is an example of this.
5
30 sec
8.P.1.3
Q.
Jane is an artist that works with clay. What kind of change does the clay go through when she creates a new piece of art?
6
30 sec
8.P.1.3
Q.
These are signs of what type of change? color change/new odor/bubbles/temperature change/solid precipitate/new substance
7
30 sec
8.P.1.3
Q.
This law states that mass cannot be created nor destroyed, only changes forms
8
30 sec
8.P.1.2
Q.
In a closed system (nothing can escape like a jar with a lid), you start with a mass of reactants of 100 grams. At the end of the chemical reaction, what should be the mass of the products?
9
30 sec
8.P.1.4
Q.
In an open system (gas can escape), the mass of the reactants is 100 grams. A gas was observed being released during the reaction. What is the mass of the products.
10
30 sec
8.P.1.4
Q.
A chemical equation with the same number of atoms of each element on both sides of the equation is called a/an HINT: what goes in comes out
11
30 sec
8.P.1.4
Q.
Which of the following equations are balanced?
12
30 sec
8.P.1.4
Q.
Is this equation balanced or unbalanced? H2+O ----> H2O
13
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 Is this equation balanced or unbalanced?
14
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 What is the total number of atoms on the reactant side?
15
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 What is the total number of atoms on the product side?
16
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 How many Hydrogen atoms (H) are there on the reactant side
17
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 How many Hydrogen atoms (H) are there on the product side?
18
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 How many Oxygen atoms (O) are there on the reactant side?
19
30 sec
8.P.1.4
Q.
H2O + CO2 -----> H2CO3 How many Oxygen atoms (O) are there on the product side?
20
30 sec
8.P.1.4
Q.
Which family of METALS is the most chemically reactive?
21
30 sec
8.P.1.2
Q.
Most reactive Nonmetal/7 valence electrons in it's outermost energy level.
22
30 sec
8.P.1.2
Q.
During a chemical reaction, which occurs when a precipitate is formed?
23
30 sec
8.P.1.3
Q.
Which element is the most reactive? Hint: Which columns are the most reactive
